the globus extensible input/output system (xio): a protocol independent io system for the grid

The Globus eXtensible Input/Output System (XIO):A protocol independent IO system for the GridBill Allcock, John Bresnahan, Raj Kettimuthu and Joe LinkArgonne National Laboratory

Grid IOGeographically disperse resourcesSupercomputers/clustersLarge data storeSpecialized scientific devicesTelescopes, environmental sensorsCollaborative sessionsAccess GridVarying network and file transfer protocolsTCP, UDP, XCP, GridFTP etc

Typical Approach

Example Application

ProblemsDevelopment timeApplication must learn to use many different APIsEach API has its own semanticsAsynchronous/SynchronousThreaded/non-threadedScalability and compatibilityApplication must be modified to work with new protocols/devicesApplication must keep up with orthogonal research issues

ObservationsData stream IO abstractionMany Grid IO needs can be treated as a stream of bytesOpen/close/read/write functionality satisfies most requirementsProtocol detailsRarely does the application need to deal with protocol detailsMost needs can be satisfied at initialization time

SolutionGlobus XIO user APISingle API/single set of semanticsSimple open/close/read/write APIDriver abstractionHides protocol detailsAllows for extensibilityDrivers can be selected at runtime

Globus XIO Approach

Example Application with XIO

DriversMake single API do many types of IOSpecific drivers for specific protocols/devicesTransportMoves data out of process spaceTCP, UDP, File etcTransformManipulate or examine dataDo not move data outside of process spaceCompression, security etc

StackTransportExactly one per stackMust be on the bottomTransformZero or many per stackControl flows from user to the top of the stack, to the transport driver

Driver developmentA set of function signaturesImplemented by the driverRegistered with Globus XIOSemanticsXIO makes calls to these functions expecting specific behaviorRead() interface function should produce data and write() should consume data

Attributes and controlsWay to expose functionalities specific to a protocolUser API to control the attributes and special features of a driverAn opportunity to tweak parameters specific to a driverAttributes and controls support is optional and a driver may choose not to have it

Globus XIO FrameworkMoves data from user to driver stackManages the interactions between driversAssist in the creation of driversAsynchronous supportClose and EOF barriersError checkingInternal API for passing operations down the stack

Existing driversTransportTCP, UDP, File, GridFTPUDT - UDP based reliable data transport protocolMulti-stream - uses multiple transport protocol streams for data transferTransformGSI, HTTP, Ordering

Performance analysisCompare with raw sockets and Globus IOLatency testsPing-Pong tests, 1000 times, average of 10 runsLoopback, LAN and WANBandwidth testsSend 1000 back-to-back messages and wait for reply, average of 10 runsLAN and WAN

Latency over Loopback Interface

Chart1

0.020.0370.031

0.0520.0690.062

0.3960.4290.432

6.9617.3887.391

78.52880.39180.425

Raw sockets

Globus XIO

Globus IO

Message Size in KBytes

Latency in ms

Loopback

Sheet1

Raw socketsGlobus XIOGlobus IO over XIOGlobus IOGlobus XIOGlobus IO over XIOGlobus IO0Raw socketsGlobus XIOGlobus IO over XIOGlobus IO

100020373931100085955510.020.0370.0390.031

10000526971621000032.692307692336.538461538519.2307692308100.0520.0690.0710.062

1000003964294364321000008.333333333310.1010101019.09090909091000.3960.4290.4360.432

1000000696173887452739110000006.13417612417.05358425516.177273380310006.9617.3887.4527.391

1000000078528803918081380425100000002.37240220052.90979013852.4156988591000078.52880.39180.81380.425


100021723523722710008.29493087569.21658986184.608294930910.2170.2350.2370.227

100001042105210561032100000.95969289831.34357005760.0959692898101.0421.0521.0561.032

10000086878715872186991000000.32232070910.39138943250.13813744681008.6878.7158.7218.699

10000008519385263852748521310000000.08216637520.09507823410.0234761072100085.19385.26385.27485.213

10000000857711857738858139857614100000000.00314791350.04990025780.00151566210000857.711857.738858.139857.614

Raw socketsGlobus XIOGlobus IO over XIOGlobus IOGlobus XIOGlobus IO over XIOGlobus IO

100029.36641528.27328727.63552528.86641510003.72237469235.89411407561.7026252609

1000090.73114190.42309790.37168590.131141100000.33951297930.39617709650.6612944502

10000092.6272492.32253592.22773392.727241000000.32895830640.4313061687-0.1079596024

100000092.94322192.87292892.97736592.64322110000000.0756300451-0.03673640710.3227777096

1000000093.39905393.33095593.50619693.199053100000000.0729108035-0.11471529590.2141349335


100025.91526.0526.01125.97510000.52093382210.37044182910.2315261432

1000028.21728.42228.43728.429100000.72651238620.7796718290.7513201262

10000040.05840.54240.68440.31000001.20824804031.56273403560.6041240202

1000000220.114221.782222.28221.1110000000.75778914560.98403554520.4524927992

100000002460.1062468.0192470.5322465.23100000000.32165280680.42380287680.2082837081


10003.4886353.4722373.4850153.46863510000.47004057460.10376551290.5732901264

1000013.66896813.20405813.44748913.468968100003.40120775761.62030520521.4631682509

10000016.55792416.20258116.19775316.3579241000002.14606009792.17521834261.2078808913

100000016.63011816.423916.40334416.53011810000001.84134592431.3636343410.6013186437

1000000016.58454916.51167516.43258516.544549100000000.43940899450.91629865850.2411883495

Sheet3

Sheet3

0.020.0370.031

0.0520.0690.062

0.3960.4290.432

6.9617.3887.391

78.52880.39180.425

Raw sockets

Globus XIO

Globus IO


Latency in ms

Loopback

Sheet2

0.2170.2350.227

1.0421.0521.032

8.6878.7158.699

85.19385.26385.213

857.711857.738857.614

Raw sockets

Globus XIO

Globus IO


Latency in ms

LAN

29.36641528.27328728.866415

90.73114190.42309790.131141

92.6272492.32253592.72724

92.94322192.87292892.643221

93.39905393.33095593.199053

Raw sockets

Globus XIO

Globus IO


Bandwidth in Mbps

LAN

25.91526.0525.975

28.21728.42228.429

40.05840.54240.3

220.114221.782221.11

2460.1062468.0192465.23

Raw sockets

Globus XIO

Globus IO


Latency in ms

LAN

3.4886353.4722373.468635

13.66896813.20405813.468968

16.55792416.20258116.357924

16.63011816.423916.530118

16.58454916.51167516.544549

Raw sockets

Globus XIO

Globus IO


Bandwidth in Mbps

WAN

29.36641528.27328727.63552528.866415

90.73114190.42309790.37168590.131141

92.6272492.32253592.22773392.72724

92.94322192.87292892.97736592.643221

93.39905393.33095593.50619693.199053

Raw sockets

Globus XIO

Globus IO over XIO

Globus IO

Message Size in Bytes

Bandwidth in MBps

LAN

20373931

52697162

396429436432

6961738874527391

78528803918081380425

Raw sockets

Globus XIO

Globus IO over XIO

Globus IO


Latency in us

Loopback

217235237227

1042105210561032

8687871587218699

85193852638527485213

857711857738858139857614

Raw sockets

Globus XIO

Globus IO over XIO

Globus IO


Latency in us

LAN

25.91526.0525.975

28.21728.42228.429

40.05840.54240.3

220.114221.782221.11

2460.1062468.0192465.23

Raw sockets

Globus XIO

Globus IO


Latency in ms

WAN

3.4886353.4722373.4850153.468635

13.66896813.20405813.44748913.468968

16.55792416.20258116.19775316.357924

16.63011816.423916.40334416.530118

16.58454916.51167516.43258516.544549

Raw sockets

Globus XIO

Globus IO over XIO

Globus IO


Bandwidth in MBps

WAN

859555

32.692307692336.538461538519.2307692308

8.333333333310.1010101019.0909090909

6.13417612417.05358425516.1772733803

2.37240220052.90979013852.415698859

Globus XIO

Globus IO over XIO

Globus IO


% increase in latency w.r.to raw sockets

Loopback

8.29493087569.21658986184.6082949309

0.95969289831.34357005760.0959692898

0.32232070910.39138943250.1381374468

0.08216637520.09507823410.0234761072

0.00314791350.04990025780.001515662

Globus XIO

Globus IO over XIO

Globus IO



LAN

3.72237469235.89411407561.7026252609

0.33951297930.39617709650.6612944502

0.32895830640.4313061687-0.1079596024

0.0756300451-0.03673640710.3227777096

0.0729108035-0.11471529590.2141349335

Globus XIO

Globus IO over XIO

Globus IO


% decrease in bandwidth w.r.to raw sockets

LAN

0.52093382210.37044182910.2315261432

0.72651238620.7796718290.7513201262

1.20824804031.56273403560.6041240202

0.75778914560.98403554520.4524927992

0.32165280680.42380287680.2082837081

Globus XIO

Globus IO over XIO

Globus IO



WAN

0.47004057460.10376551290.5732901264

3.40120775761.62030520521.4631682509

2.14606009792.17521834261.2078808913

1.84134592431.3636343410.6013186437

0.43940899450.91629865850.2411883495

Globus XIO

Globus IO over XIO

Globus IO

Message Size of Bytes


WAN

Latency comparison on LAN

Chart2

0.2170.2350.227

1.0421.0521.032

8.6878.7158.699

85.19385.26385.213

857.711857.738857.614

Raw sockets

Globus XIO

Globus IO


Latency in ms

LAN

Sheet1


100020373931100085955510.020.0370.0390.031

10000526971621000032.692307692336.538461538519.2307692308100.0520.0690.0710.062

1000003964294364321000008.333333333310.1010101019.09090909091000.3960.4290.4360.432

1000000696173887452739110000006.13417612417.05358425516.177273380310006.9617.3887.4527.391

1000000078528803918081380425100000002.37240220052.90979013852.4156988591000078.52880.39180.81380.425


100021723523722710008.29493087569.21658986184.608294930910.2170.2350.2370.227

100001042105210561032100000.95969289831.34357005760.0959692898101.0421.0521.0561.032

10000086878715872186991000000.32232070910.39138943250.13813744681008.6878.7158.7218.699

10000008519385263852748521310000000.08216637520.09507823410.0234761072100085.19385.26385.27485.213

10000000857711857738858139857614100000000.00314791350.04990025780.00151566210000857.711857.738858.139857.614


100029.36641528.27328727.63552528.86641510003.72237469235.89411407561.7026252609

1000090.73114190.42309790.37168590.131141100000.33951297930.39617709650.6612944502

10000092.6272492.32253592.22773392.727241000000.32895830640.4313061687-0.1079596024

100000092.94322192.87292892.97736592.64322110000000.0756300451-0.03673640710.3227777096

1000000093.39905393.33095593.50619693.199053100000000.0729108035-0.11471529590.2141349335


100025.91526.0526.01125.97510000.52093382210.37044182910.2315261432

1000028.21728.42228.43728.429100000.72651238620.7796718290.7513201262

10000040.05840.54240.68440.31000001.20824804031.56273403560.6041240202

1000000220.114221.782222.28221.1110000000.75778914560.98403554520.4524927992

100000002460.1062468.0192470.5322465.23100000000.32165280680.42380287680.2082837081


10003.4886353.4722373.4850153.46863510000.47004057460.10376551290.5732901264

1000013.66896813.20405813.44748913.468968100003.40120775761.62030520521.4631682509

10000016.55792416.20258116.19775316.3579241000002.14606009792.17521834261.2078808913

100000016.63011816.423916.40334416.53011810000001.84134592431.3636343410.6013186437

1000000016.58454916.51167516.43258516.544549100000000.43940899450.91629865850.2411883495

Sheet3

Sheet3

0.020.0370.031

0.0520.0690.062

0.3960.4290.432

6.9617.3887.391

78.52880.39180.425

Raw sockets

Globus XIO

Globus IO


Latency in ms

Loopback

Sheet2

0.2170.2350.227

1.0421.0521.032

8.6878.7158.699

85.19385.26385.213

857.711857.738857.614

Raw sockets

Globus XIO

Globus IO


Latency in ms

LAN

29.36641528.27328728.866415

90.73114190.42309790.131141

92.6272492.32253592.72724

92.94322192.87292892.643221

93.39905393.33095593.199053

Raw sockets

Globus XIO

Globus IO


Bandwidth in Mbps

LAN

25.91526.0525.975

28.21728.42228.429

40.05840.54240.3

220.114221.782221.11

2460.1062468.0192465.23

Raw sockets

Globus XIO

Globus IO


Latency in ms

LAN

3.4886353.4722373.468635

13.66896813.20405813.468968

16.55792416.20258116.357924

16.63011816.423916.530118

16.58454916.51167516.544549

Raw sockets

Globus XIO

Globus IO


Bandwidth in Mbps

WAN

29.36641528.27328727.63552528.866415

90.73114190.42309790.37168590.131141

92.6272492.32253592.22773392.72724

92.94322192.87292892.97736592.643221

93.39905393.33095593.50619693.199053

Raw sockets

Globus XIO

Globus IO over XIO

Globus IO


Bandwidth in MBps

LAN

20373931

52697162

396429436432

6961738874527391

78528803918081380425

Raw sockets

Globus XIO

Globus IO over XIO

Globus IO


Latency in us

Loopback

217235237227

1042105210561032

8687871587218699

85193852638527485213

857711857738858139857614

Raw sockets

Globus XIO

Globus IO over XIO

Globus IO


Latency in us

LAN

25.91526.0525.975

28.21728.42228.429

40.05840.54240.3

220.114221.782221.11

2460.1062468.0192465.23

Raw sockets

Globus XIO

Globus IO


Latency in ms

WAN

3.4886353.4722373.4850153.468635

13.66896813.20405813.44748913.468968

16.55792416.20258116.19775316.357924

16.63011816.423916.40334416.530118

16.58454916.51167516.43258516.544549

Raw sockets

Globus XIO

Globus IO over XIO

Globus IO


Bandwidth in MBps

WAN

859555

32.692307692336.538461538519.2307692308

8.333333333310.1010101019.0909090909

6.13417612417.05358425516.1772733803

2.37240220052.90979013852.415698859

Globus XIO

Globus IO over XIO

Globus IO



Loopback

8.29493087569.21658986184.6082949309

0.95969289831.34357005760.0959692898

0.32232070910.39138943250.1381374468

0.08216637520.09507823410.0234761072

0.00314791350.04990025780.001515662

Globus XIO

Globus IO over XIO

Globus IO



LAN

3.72237469235.89411407561.7026252609

0.33951297930.39617709650.6612944502

0.32895830640.4313061687-0.1079596024

0.0756300451-0.03673640710.3227777096

0.0729108035-0.11471529590.2141349335

Globus XIO

Globus IO over XIO

Globus IO



LAN

0.52093382210.37044182910.2315261432

0.72651238620.7796718290.7513201262

1.20824804031.56273403560.6041240202

0.75778914560.98403554520.4524927992

0.32165280680.42380287680.2082837081

Globus XIO

Globus IO over XIO

Globus IO



WAN

0.47004057460.10376551290.5732901264

3.40120775761.62030520521.4631682509

2.14606009792.17521834261.2078808913

1.84134592431.3636343410.6013186437

0.43940899450.91629865850.2411883495

Globus XIO

Globus IO over XIO

Globus IO



WAN

Latency comparison on a WAN

Chart3

25.91526.0525.975

28.21728.42228.429

40.05840.54240.3

220.114221.782221.11

2460.1062468.0192465.23

Raw sockets

Globus XIO

Globus IO


Latency in ms

WAN

Sheet1


100020373931100085955510.020.0370.0390.031

10000526971621000032.692307692336.538461538519.2307692308100.0520.0690.0710.062

1000003964294364321000008.333333333310.1010101019.09090909091000.3960.4290.4360.432

1000000696173887452739110000006.13417612417.05358425516.177273380310006.9617.3887.4527.391

1000000078528803918081380425100000002.37240220052.90979013852.4156988591000078.52880.39180.81380.425


100021723523722710008.29493087569.21658986184.608294930910.2170.2350.2370.227

100001042105210561032100000.95969289831.34357005760.0959692898101.0421.0521.0561.032

10000086878715872186991000000.32232070910.39138943250.13813744681008.6878.7158.7218.699

10000008519385263852748521310000000.08216637520.09507823410.0234761072100085.19385.26385.27485.213

10000000857711857738858139857614100000000.00314791350.04990025780.00151566210000857.711857.738858.139857.614


100029.36641528.27328727.63552528.86641510003.72237469235.89411407561.7026252609

1000090.73114190.42309790.37168590.131141100000.33951297930.39617709650.6612944502

10000092.6272492.32253592.22773392.727241000000.32895830640.4313061687-0.1079596024

100000092.94322192.87292892.97736592.64322110000000.0756300451-0.03673640710.3227777096

1000000093.39905393.33095593.50619693.199053100000000.0729108035-0.11471529590.2141349335


100025.91526.0526.01125.97510000.52093382210.37044182910.2315261432

1000028.21728.42228.43728.429100000.72651238620.7796718290.7513201262

10000040.05840.54240.68440.31000001.20824804031.56273403560.6041240202

1000000220.114221.782222.28221.1110000000.75778914560.98403554520.4524927992

100000002460.1062468.0192470.5322465.23100000000.32165280680.42380287680.2082837081


10003.4886353.4722373.4850153.46863510000.47004057460.10376551290.5732901264

1000013.66896813.20405813.44748913.468968100003.40120775761.62030520521.4631682509

10000016.55792416.20258116.19775316.3579241000002.14606009792.17521834261.2078808913

100000016.63011816.423916.40334416.53011810000001.84134592431.3636343410.6013186437

1000000016.58454916.51167516.43258516.544549100000000.43940899450.91629865850.2411883495

Sheet3

Sheet3

0.020.0370.031

0.0520.0690.062

0.3960.4290.432

6.9617.3887.391

78.52880.39180.425

Raw sockets

Globus XIO

Globus IO


Latency in ms

Loopback

Sheet2

0.2170.2350.227

1.0421.0521.032

8.6878.7158.699

85.19385.26385.213

857.711857.738857.614

Raw sockets

Globus XIO

Globus IO


Latency in ms

LAN

29.36641528.27328728.866415

90.73114190.42309790.131141

92.6272492.32253592.72724

92.94322192.87292892.643221

93.39905393.33095593.199053

Raw sockets

Globus XIO

Globus IO


Bandwidth in Mbps

LAN

25.91526.0525.975

28.21728.42228.429

40.05840.54240.3

220.114221.782221.11

2460.1062468.0192465.23

Raw sockets

Globus XIO

Globus IO


Latency in ms

WAN

3.4886353.4722373.468635

13.66896813.20405813.468968

16.55792416.20258116.357924

16.63011816.423916.530118

16.58454916.51167516.544549

Raw sockets

Globus XIO

Globus IO


Bandwidth in Mbps

WAN

29.36641528.27328727.63552528.866415

90.73114190.42309790.37168590.131141

92.6272492.32253592.22773392.72724

92.94322192.87292892.97736592.643221

93.39905393.33095593.50619693.199053

Raw sockets

Globus XIO

Globus IO over XIO

Globus IO


Bandwidth in MBps

LAN

20373931

52697162

396429436432

6961738874527391

78528803918081380425

Raw sockets

Globus XIO

Globus IO over XIO

Globus IO


Latency in us

Loopback

217235237227

1042105210561032

8687871587218699

85193852638527485213

857711857738858139857614

Raw sockets

Globus XIO

Globus IO over XIO

Globus IO


Latency in us

LAN

25.91526.0525.975

28.21728.42228.429

40.05840.54240.3

220.114221.782221.11

2460.1062468.0192465.23

Raw sockets

Globus XIO

Globus IO


Latency in ms

WAN

3.4886353.4722373.4850153.468635

13.66896813.20405813.44748913.468968

16.55792416.20258116.19775316.357924

16.63011816.423916.40334416.530118

16.58454916.51167516.43258516.544549

Raw sockets

Globus XIO

Globus IO over XIO

Globus IO


Bandwidth in MBps

WAN

859555

32.692307692336.538461538519.2307692308

8.333333333310.1010101019.0909090909

6.13417612417.05358425516.1772733803

2.37240220052.90979013852.415698859

Globus XIO

Globus IO over XIO

Globus IO



Loopback

8.29493087569.21658986184.6082949309

0.95969289831.34357005760.0959692898

0.32232070910.39138943250.1381374468

0.08216637520.09507823410.0234761072

0.00314791350.04990025780.001515662

Globus XIO

Globus IO over XIO

Globus IO



LAN

3.72237469235.89411407561.7026252609

0.33951297930.39617709650.6612944502

0.32895830640.4313061687-0.1079596024

0.0756300451-0.03673640710.3227777096

0.0729108035-0.11471529590.2141349335

Globus XIO

Globus IO over XIO

Globus IO



LAN

0.52093382210.37044182910.2315261432

0.72651238620.7796718290.7513201262

1.20824804031.56273403560.6041240202

0.75778914560.98403554520.4524927992

0.32165280680.42380287680.2082837081

Globus XIO

Globus IO over XIO

Globus IO



WAN

0.47004057460.10376551290.5732901264

3.40120775761.62030520521.4631682509

2.14606009792.17521834261.2078808913

1.84134592431.3636343410.6013186437

0.43940899450.91629865850.2411883495

Globus XIO

Globus IO over XIO

Globus IO



WAN

Bandwidth on a LAN

Bandwidth on a WAN

Multiple drivers on a stack

Chart2

0.1160.106

0.5540.565

5.7835.68

62.00858.982

637.996607.974

Globus XIO with GSI

Globus IO with GSI


Latency in ms

Loopback

Sheet1

Raw socketsGlobus XIOGlobus IO over XIOGlobus IO

1183435270.0000290.00003434

10355354440.0000440.00005353

100173435280.0000290.00003434

1000203739310.0000320.00003737

10000526971620.0000650.00006969

1000003964294364320.0004190.000429429

100000069617388745273910.0074070.0073887388

10000000785288039180813804250.08039180391


1566973810.000065650.00006969

10547073680.000064640.0000770

100728588830.00008800.00008585

10002172352372270.000232300.000235235

1000010421052105610320.0010510500.0010521052

10000086878715872186990.00870187010.0087158715

1000000851938526385274852130.085214852140.08526385263

100000008577118577388581398576140.857738857738

Raw socketsGlobus XIOGlobus IO over XIOGlobus IO0.00003535

10.0393170.0664260.055670.0733930.02644326.4430.00005454

100.2745180.193820.1922580.2188680.02572825.7280.00003535

1002.0237124.6414291.8679721.8612640.02575725.7570.00003939

100011.17434311.15030411.13962411.1419660.02597525.9750.00007171

1000011.21551511.19868411.20120911.2013410.02842928.4290.000436436

10000011.21894211.2066211.20720111.2077370.040340.30.0074527452

100000011.21943711.20655211.20652911.2077180.22311223.110.08081380813

1000000011.21948811.20621211.20665511.207613

0.03413834.138

0.02575525.755

Raw socketsGlobus XIOGlobus IO over XIOGlobus IO0.02582425.824

134.22234.13834.17226.4430.0260526.05

1025.67625.75525.69625.7280.02842228.422

10025.70325.82425.72825.7570.04074240.742

100025.91526.0526.01125.9750.229782229.782

1000028.61728.42228.43728.4290.0518451.842.4680192468.019

10000040.05840.74243.88440.30.0520152.01

1000000220.114223.782225.28223.110.0520252.020.03417234.172

100000002464.1062468.0192467.5322465.230.05220452.2040.02569625.696

0.05611856.1180.02572825.728

0.07276672.7660.02601126.011

Raw socketsGlobus XIOGlobus IO over XIOGlobus IO0.671603671.6030.02843728.437

10.0005050.000520.0004470.0051340.04388443.884

100.0624880.0606270.0603910.31034851844.26551.8442650.22528225.28

1000.3302480.3304130.3295353.02433152033.0252.033022.4675322467.532

10003.3310313.3316723.3313813.41237252004.19552.004195

1000010.17634710.0641779.90050510.12042752196.6852.196680.00007373

10000010.55887110.16270710.16538710.14766356073.28556.0732850.00007373

100000010.63610510.50094510.45151210.5523775803.99575.8039950.00008888

1000000010.89985610.72244210.52713710.780650.000237237

0.05184351.8430.0010561056

Raw socketsGlobus XIOGlobus IO over XIOGlobus IO0.05203752.0370.0087218721

151.79451.8451.84426551.8430.05207452.0740.08527485274

1051.98752.0152.0330252.0370.05222352.2230.858139858139

10052.03152.0252.00419552.0740.08651386.513

100052.1852.20452.1966852.2230.595538595.538

1000078.27582.11881.07328586.5131.3613461361.346

100000446.146448.766450.803995443.538

10000001369.6771371.6031372.540941361.346

0.000027270.00008181

0.000044440.00006868


10.0609990.0473490.0476180.000031310.000227227

100.3446920.4061160.4049450.000062620.0010321032

1002.596942.2881692.2582260.0004324320.0086998699

10004.3007773.7013824.2840.00739173910.08521385213

100006.5414526.1045676.3360380.080425804250.857614857614

1000007.1477737.2487527.128835

10000008.6445558.6366248.343988

1000000011.51399411.50757110.984320.00005656

0.03422234.2220.00005454

0.02567625.6760.00007272

0.0001160.0000910.02570325.7030.000217217

0.0000990.0001070.02591525.9150.0010421042

0.0001070.0000970.02961729.6170.0086878687

0.000240.0002030.04105841.0580.08519385193

0.0013080.0012070.220114220.1140.857711857711

0.0130280.0123692.4641062464.106

0.1212010.116925

0.00001818

Globus XIOGlobus IOGlobus XIOGlobus IO0.00003535

10.0830.078134270.00001717

100.0660.2291053440.0000220

1000.070.07810034280.00005252

10000.1160.126100037310.000396396

100000.5540.5651000069620.0069616961

1000005.7835.681000004294320.07852878528

100000062.00858.982100000073887391

10000000637.996607.974100000008039180425

0.0000780.0780.0000830.083

0.0002290.2290.0000660.066

0.0000780.0780.000070.07

0.0001260.1260.0001160.116

0.0005650.5650.0005540.554

0.005685.680.0057835.783

0.05898258.9820.06000860.008

0.607974607.9740.627996627.996

Globus XIOGlobus IOGlobus XIOGlobus IO

10000.1160.10610003731

100000.5540.565100006962

1000005.7835.68100000429432

100000062.00858.982100000073887391

10000000637.996607.974100000008039180425

Globus XIO with GSIGlobus IO with GSIGlobus XIO with GSIGlobus IO with GSI

100011610610.1160.106

10000554565100.5540.565

100000578356801005.7835.68

10000006200858982100062.00858.982

1000000063799660797410000637.996607.974

Sheet2

Sheet2

18343527

35535444

17343528

20373931

52697162

396429436432

6961738874527391

78528803918081380425

Raw sockets

Globus XIO

Globus IO over XIO

Globus IO


Latency in us

Loopback

Sheet3

56697381

54707368

72858883

217235237227

1042105210561032

Raw sockets

Globus XIO

Globus IO over XIO

Globus IO


Latency in us

LAN

Sheet4

0.03931710.055670.073393

0.274518100.1922580.218868

2.0237121001.8679721.861264

11.174343100011.13962411.141966

11.2155151000011.20120911.201341

11.21894210000011.20720111.207737

11.219437100000011.20652911.207718

11.2194881000000011.20665511.207613

Raw sockets

Globus XIO

Globus IO over XIO

Globus IO


Bandwidth in MBps

LAN

0.03422234.13834.17226.443

0.02567625.75525.69625.728

0.02570325.82425.72825.757

0.02591526.0526.01125.975

0.02961728.42228.43728.429

0.04105840.74243.88440.3

0.220114223.782225.28223.11

Raw sockets

Globus XIO

Globus IO over XIO

Globus IO


Latency in ms

WAN

0.0005050.000520.0004470.005134

0.0624880.0606270.0603910.310348

0.3302480.3304130.3295353.024331

3.3310313.3316723.3313813.412372

10.17634710.0641779.90050510.120427

10.55887110.16270710.16538710.147663

100000010.50094510.45151210.55237

Raw sockets

Globus XIO

Globus IO over XIO

Globus IO


Bandwidth in MBps

WAN

51.79451.8451.84426551.843

51.98752.0152.0330252.037

52.03152.0252.00419552.074

52.1852.20452.1966852.223

78.27582.11881.07328586.513

446.146448.766450.803995443.538

1369.6771371.6031372.540941361.346

Raw sockets

Globus XIO

Globus IO over XIO

Globus IO


Latency in ms

Super WAN

0.0609990.0473490.047618

0.3446920.4061160.404945

2.596942.2881692.258226

4.3007773.7013824.284

6.5414526.1045676.336038

7.1477737.2487527.128835

8.6445558.6366248.343988

11.51399411.50757110.98432

Raw sockets

Globus XIO

Globus IO over XIO


Bandwidth in MBps

Super WAN

3731

6962

429432

73887391

8039180425

Globus XIO

Globus IO


Latency in us

Loopback

0.1160.106

0.5540.565

5.7835.68

62.00858.982

637.996607.974

Globus XIO with GSI

Globus IO with GSI


Latency in ms

Loopback

Raw socketsGlobus XIOGlobus IO over XIOGlobus IORaw socketsGlobus XIOGlobus IO over XIOGlobus IO

118343527156697363

10355354441054707368

1001734352810072858883

1000203739311000217235237227

1000052697162100001042105210561043

1000003964294364321000008687871587218699

10000006961738874527391100000085193852638527485213

100000007852880391808138042510000000857711857738858139857724

0.88888888890.94444444440.50.23214285710.30357142860.125

0.51428571430.54285714290.25714285710.29629629630.35185185190.2592592593

11.05882352940.64705882350.18055555560.22222222220.1527777778

0.850.950.550.08294930880.09216589860.0460829493

0.32692307690.36538461540.19230769230.0095969290.01343570060.0009596929

0.08333333330.1010101010.09090909090.00322320710.00391389430.0013813745

0.06134176120.07053584260.06177273380.00082166380.00095078230.0002347611

0.0237240220.02909790140.02415698860.00003147910.00049900260.0000151566

Globus XIOGlobus IO over XIOGlobus IOGlobus XIOGlobus IO over XIOGlobus IO

188.888888888994.444444444450123.214285714330.357142857112.5

1051.428571428654.285714285725.71428571431029.629629629635.185185185225.9259259259

100100105.882352941264.705882352910018.055555555622.222222222215.2777777778

100085955510008.29493087569.21658986184.6082949309

1000032.692307692336.538461538519.2307692308100000.95969289831.34357005760.0959692898

1000008.333333333310.1010101019.09090909091000000.32232070910.39138943250.1381374468

10000006.13417612417.05358425516.177273380310000000.08216637520.09507823410.0234761072

100000002.37240220052.90979013852.415698859100000000.00314791350.04990025780.001515662


10.0693170.0664260.055670.067393125.62225.73825.77225.643

100.2745180.193820.1922580.2188681025.67625.75525.69625.728

1002.0237122.0114291.8679721.86126410025.70325.82425.72825.757

100011.17434311.15030411.13962411.141966100025.91526.0526.01125.975

1000011.21551511.19868411.20120911.2013411000028.21728.42228.43728.429

10000011.21894211.2066211.20720111.20773710000040.05840.54240.68440.3

100000011.21943711.20655211.20652911.2077181000000220.114221.782222.28221.11

1000000011.21948811.20621211.20665511.207613100000002460.1062468.0192470.5322465.23

0.04170694060.19687811070.02775653880.00452735930.00585434390.0008196081

0.29396250880.29965248180.20271894740.00307680320.00077893750.0020252376

0.00606953950.07695759080.08027229170.00470762170.00097264910.0021009221

0.00215126740.00310702830.0028974410.00520933820.00370441830.0023152614

0.0015006890.00127555440.0012637850.00726512390.00779671830.0075132013

0.0010983210.00104653360.00099875730.01208248040.01562734040.0060412402

0.00114845330.00115050340.00104452660.00757789150.00984035550.004524928

0.00118329820.00114381330.00105842620.00321652810.00423802880.0020828371


14.170694057719.68781107092.7756538810.45273593010.58543439230.0819608149

1029.396250883429.965248180420.2718947391100.3076803240.07789375290.2025237576

1000.60695395397.69575908038.02722917091000.47076216780.09726491070.2100922071

10000.21512674170.31070283060.28974410410000.52093382210.37044182910.2315261432

100000.15006890010.12755544440.1263785034100000.72651238620.7796718290.7513201262

1000000.10983210360.10465336210.0998757281000001.20824804031.56273403560.6041240202

10000000.11484533490.11505033630.104452656610000000.75778914560.98403554520.4524927992

100000000.11832982040.11438133360.1058426196100000000.32165280680.42380287680.2082837081


10.0005250.000520.0005170.00052410.0007140.0007040.0006930.000698

100.0624880.0606270.0603910.061048100.1934740.1655660.1792320.183474

1000.3302480.3301130.3295350.3243311002.0358522.0322921.9280952.015852

10003.3310313.3306723.313813.322372100029.36641528.27328727.63552528.866415

1000010.07634710.0641779.9985510.0204271000090.73114190.42309790.37168590.131141

10000010.55887110.36270710.33538710.44766310000092.6272492.32253592.22773392.72724

100000010.63610510.50094510.45151210.55237100000092.94322192.87292892.97736592.643221

1000000010.89985610.72244210.67713710.780651000000093.39905393.33095593.50619693.199053

10.00952380950.01523809520.00190476190.01400560220.02941176470.0224089636

100.02978171810.03355844320.02304442450.14424677220.07361195820.0516865315

1000.00040878370.00215898360.01791683830.00174865360.05292968250.0098238968

10000.00010777440.00516987080.00259949550.03722374690.05894114080.0170262526

100000.0012077790.00772075440.00554963020.00339512980.0039617710.0066129445

1000000.01857812260.02116552040.01053218660.00328958310.0043130617-0.001079596

10000000.01270765940.01735531950.00787271280.0007563005-0.00036736410.0032277771

100000000.01627672880.02043320570.01093647480.000729108-0.0011471530.0021413493


10.95238095241.52380952380.190476190511.40056022412.94117647062.2408963585

102.9781718093.35584432212.3044424531014.42467721767.36119581965.1686531524

1000.04087837020.21589835521.79168382551000.17486536355.29296825110.9823896826

10000.0107774440.5169870830.259949547210003.72237469235.89411407561.7026252609

100000.1207778970.77207543570.5549630238100000.33951297930.39617709650.6612944502

1000001.85781226042.11655204421.05321866321000000.32895830640.4313061687-0.1079596024

10000001.2707659431.73553194520.787271280210000000.0756300451-0.03673640710.3227777096

100000001.62767287932.04332057231.0936474757100000000.0729108035-0.11471529590.2141349335


10.0003390.0003360.0003370.000331

100.0625910.0602510.0597240.061591

1000.3309420.3224250.320170.329942

10003.4886353.4722373.4850153.468635

1000013.66896813.20405813.44748913.468968

10000016.55792416.20258116.19775316.357924

100000016.63011816.323916.40334416.530118

1000000016.58454916.51167516.43258516.544549

0.00884955750.0058997050.0235988201

0.03738556660.04580530750.0159767379

0.02573562740.03254951020.0030216775

0.00470040570.00103765510.0057329013

0.03401207760.01620305210.0146316825

0.0214606010.02175218340.0120788089

0.01841345920.01363634340.0060131864

0.00439408990.00916298660.0024118835

Globus XIOGlobus IO over XIOGlobus IO

10.88495575220.58997050152.3598820059

103.73855666154.58053074721.597673787

1002.57356273913.25495101860.3021677514

10000.47004057460.10376551290.5732901264

100003.40120775761.62030520521.4631682509

1000002.14606009792.17521834261.2078808913

10000001.84134592431.3636343410.6013186437

100000000.43940899450.91629865850.2411883495

88.888888888994.444444444450

51.428571428654.285714285725.7142857143

100105.882352941264.7058823529

859555

32.692307692336.538461538519.2307692308

8.333333333310.1010101019.0909090909

6.13417612417.05358425516.1772733803

2.37240220052.90979013852.415698859

Globus XIO

Globus IO over XIO

Globus IO



Loopback

MBD0002E9CF.xls

Chart3

116106

554565

57835680

6200858982

637996607974

Globus XIO with GSI

Globus IO with GSI


Latency in us

Loopback

Sheet1


1183435270.0000290.00003434

10355354440.0000440.00005353

100173435280.0000290.00003434

1000203739310.0000320.00003737

10000526971620.0000650.00006969

1000003964294364320.0004190.000429429

100000069617388745273910.0074070.0073887388

10000000785288039180813804250.08039180391


1566973810.000065650.00006969

10547073680.000064640.0000770

100728588830.00008800.00008585

10002172352372270.000232300.000235235

1000010421052105610320.0010510500.0010521052

10000086878715872186990.00870187010.0087158715

1000000851938526385274852130.085214852140.08526385263

100000008577118577388581398576140.857738857738

Raw socketsGlobus XIOGlobus IO over XIOGlobus IO0.00003535

10.0393170.0664260.055670.0733930.02644326.4430.00005454

100.2745180.193820.1922580.2188680.02572825.7280.00003535

1002.0237124.6414291.8679721.8612640.02575725.7570.00003939

100011.17434311.15030411.13962411.1419660.02597525.9750.00007171

1000011.21551511.19868411.20120911.2013410.02842928.4290.000436436

10000011.21894211.2066211.20720111.2077370.040340.30.0074527452

100000011.21943711.20655211.20652911.2077180.22311223.110.08081380813

1000000011.21948811.20621211.20665511.207613

0.03413834.138

0.02575525.755


134.22234.13834.17226.4430.0260526.05

1025.67625.75525.69625.7280.02842228.422

10025.70325.82425.72825.7570.04074240.742

100025.91526.0526.01125.9750.229782229.782

1000028.61728.42228.43728.4290.0518451.842.4680192468.019

10000040.05840.74243.88440.30.0520152.01

1000000220.114223.782225.28223.110.0520252.020.03417234.172

100000002464.1062468.0192467.5322465.230.05220452.2040.02569625.696

0.05611856.1180.02572825.728

0.07276672.7660.02601126.011

Raw socketsGlobus XIOGlobus IO over XIOGlobus IO0.671603671.6030.02843728.437

10.0005050.000520.0004470.0051340.04388443.884

100.0624880.0606270.0603910.31034851844.26551.8442650.22528225.28

1000.3302480.3304130.3295353.02433152033.0252.033022.4675322467.532

10003.3310313.3316723.3313813.41237252004.19552.004195

1000010.17634710.0641779.90050510.12042752196.6852.196680.00007373

10000010.55887110.16270710.16538710.14766356073.28556.0732850.00007373

100000010.63610510.50094510.45151210.5523775803.99575.8039950.00008888

1000000010.89985610.72244210.52713710.780650.000237237

0.05184351.8430.0010561056

Raw socketsGlobus XIOGlobus IO over XIOGlobus IO0.05203752.0370.0087218721

151.79451.8451.84426551.8430.05207452.0740.08527485274

1051.98752.0152.0330252.0370.05222352.2230.858139858139

10052.03152.0252.00419552.0740.08651386.513

100052.1852.20452.1966852.2230.595538595.538

1000078.27582.11881.07328586.5131.3613461361.346

100000446.146448.766450.803995443.538

10000001369.6771371.6031372.540941361.346

0.000027270.00008181

0.000044440.00006868


10.0609990.0473490.0476180.000031310.000227227

100.3446920.4061160.4049450.000062620.0010321032

1002.596942.2881692.2582260.0004324320.0086998699

10004.3007773.7013824.2840.00739173910.08521385213

100006.5414526.1045676.3360380.080425804250.857614857614

1000007.1477737.2487527.128835

10000008.6445558.6366248.343988

1000000011.51399411.50757110.984320.00005656

0.03422234.2220.00005454

0.02567625.6760.00007272

0.0001160.0000910.02570325.7030.000217217

0.0000990.0001070.02591525.9150.0010421042

0.0001070.0000970.02961729.6170.0086878687

0.000240.0002030.04105841.0580.08519385193

0.0013080.0012070.220114220.1140.857711857711

0.0130280.0123692.4641062464.106

0.1212010.116925

0.00001818

Globus XIOGlobus IOGlobus XIOGlobus IO0.00003535

10.0830.078134270.00001717

100.0660.2291053440.0000220

1000.070.07810034280.00005252

10000.1160.126100037310.000396396

100000.5540.5651000069620.0069616961

1000005.7835.681000004294320.07852878528

100000062.00858.982100000073887391

10000000637.996607.974100000008039180425

0.0000780.0780.0000830.083

0.0002290.2290.0000660.066

0.0000780.0780.000070.07

0.0001260.1260.0001160.116

0.0005650.5650.0005540.554

0.005685.680.0057835.783

0.05898258.9820.06000860.008

0.607974607.9740.627996627.996

Globus XIOGlobus IOGlobus XIOGlobus IO

10000.1160.10610003731

100000.5540.565100006962

1000005.7835.68100000429432

100000062.00858.982100000073887391

10000000637.996607.974100000008039180425

Globus XIO with GSIGlobus IO with GSI

1000116106

10000554565

10000057835680

10000006200858982

10000000637996607974

Sheet2

Sheet2

18343527

35535444

17343528

20373931

52697162

396429436432

6961738874527391

78528803918081380425

Raw sockets

Globus XIO

Globus IO over XIO

Globus IO


Latency in us

Loopback

Sheet3

56697381

54707368

72858883

217235237227

1042105210561032

Raw sockets

Globus XIO

Globus IO over XIO

Globus IO


Latency in us

LAN

Sheet4

0.03931710.055670.073393

0.274518100.1922580.218868

2.0237121001.8679721.861264

11.174343100011.13962411.141966

11.2155151000011.20120911.201341

11.21894210000011.20720111.207737

11.219437100000011.20652911.207718

11.2194881000000011.20665511.207613

Raw sockets

Globus XIO

Globus IO over XIO

Globus IO


Bandwidth in MBps

LAN

0.03422234.13834.17226.443

0.02567625.75525.69625.728

0.02570325.82425.72825.757

0.02591526.0526.01125.975

0.02961728.42228.43728.429

0.04105840.74243.88440.3

0.220114223.782225.28223.11

Raw sockets

Globus XIO

Globus IO over XIO

Globus IO


Latency in ms

WAN

0.0005050.000520.0004470.005134

0.0624880.0606270.0603910.310348

0.3302480.3304130.3295353.024331

3.3310313.3316723.3313813.412372

10.17634710.0641779.90050510.120427

10.55887110.16270710.16538710.147663

100000010.50094510.45151210.55237

Raw sockets

Globus XIO

Globus IO over XIO

Globus IO


Bandwidth in MBps

WAN

51.79451.8451.84426551.843

51.98752.0152.0330252.037

52.03152.0252.00419552.074

52.1852.20452.1966852.223

78.27582.11881.07328586.513

446.146448.766450.803995443.538

1369.6771371.6031372.540941361.346

Raw sockets

Globus XIO

Globus IO over XIO

Globus IO


Latency in ms

Super WAN

0.0609990.0473490.047618

0.3446920.4061160.404945

2.596942.2881692.258226

4.3007773.7013824.284

6.5414526.1045676.336038

7.1477737.2487527.128835

8.6445558.6366248.343988

11.51399411.50757110.98432

Raw sockets

Globus XIO

Globus IO over XIO


Bandwidth in MBps

Super WAN

3731

6962

429432

73887391

8039180425

Globus XIO

Globus IO


Latency in us

Loopback

116106

554565

57835680

6200858982

637996607974

Globus XIO with GSI

Globus IO with GSI


Latency in us

Loopback


118343527156697363

10355354441054707368

1001734352810072858883

1000203739311000217235237227

1000052697162100001042105210561043

1000003964294364321000008687871587218699

10000006961738874527391100000085193852638527485213

100000007852880391808138042510000000857711857738858139857724

0.88888888890.94444444440.50.23214285710.30357142860.125

0.51428571430.54285714290.25714285710.29629629630.35185185190.2592592593

11.05882352940.64705882350.18055555560.22222222220.1527777778

0.850.950.550.08294930880.09216589860.0460829493

0.32692307690.36538461540.19230769230.0095969290.01343570060.0009596929

0.08333333330.1010101010.09090909090.00322320710.00391389430.0013813745

0.06134176120.07053584260.06177273380.00082166380.00095078230.0002347611

0.0237240220.02909790140.02415698860.00003147910.00049900260.0000151566


188.888888888994.444444444450123.214285714330.357142857112.5

1051.428571428654.285714285725.71428571431029.629629629635.185185185225.9259259259

100100105.882352941264.705882352910018.055555555622.222222222215.2777777778

100085955510008.29493087569.21658986184.6082949309

1000032.692307692336.538461538519.2307692308100000.95969289831.34357005760.0959692898

1000008.333333333310.1010101019.09090909091000000.32232070910.39138943250.1381374468

10000006.13417612417.05358425516.177273380310000000.08216637520.09507823410.0234761072

100000002.37240220052.90979013852.415698859100000000.00314791350.04990025780.001515662


10.0693170.0664260.055670.067393125.62225.73825.77225.643

100.2745180.193820.1922580.2188681025.67625.75525.69625.728

1002.0237122.0114291.8679721.86126410025.70325.82425.72825.757

100011.17434311.15030411.13962411.141966100025.91526.0526.01125.975

1000011.21551511.19868411.20120911.2013411000028.21728.42228.43728.429

10000011.21894211.2066211.20720111.20773710000040.05840.54240.68440.3

100000011.21943711.20655211.20652911.2077181000000220.114221.782222.28221.11

1000000011.21948811.20621211.20665511.207613100000002460.1062468.0192470.5322465.23

0.04170694060.19687811070.02775653880.00452735930.00585434390.0008196081

0.29396250880.29965248180.20271894740.00307680320.00077893750.0020252376

0.00606953950.07695759080.08027229170.00470762170.00097264910.0021009221

0.00215126740.00310702830.0028974410.00520933820.00370441830.0023152614

0.0015006890.00127555440.0012637850.00726512390.00779671830.0075132013

0.0010983210.00104653360.00099875730.01208248040.01562734040.0060412402

0.00114845330.00115050340.00104452660.00757789150.00984035550.004524928

0.00118329820.00114381330.00105842620.00321652810.00423802880.0020828371


14.170694057719.68781107092.7756538810.45273593010.58543439230.0819608149

1029.396250883429.965248180420.2718947391100.3076803240.07789375290.2025237576

1000.60695395397.69575908038.02722917091000.47076216780.09726491070.2100922071

10000.21512674170.31070283060.28974410410000.52093382210.37044182910.2315261432

100000.15006890010.12755544440.1263785034100000.72651238620.7796718290.7513201262

1000000.10983210360.10465336210.0998757281000001.20824804031.56273403560.6041240202

10000000.11484533490.11505033630.104452656610000000.75778914560.98403554520.4524927992

100000000.11832982040.11438133360.1058426196100000000.32165280680.42380287680.2082837081


10.0005250.000520.0005170.00052410.0007140.0007040.0006930.000698

100.0624880.0606270.0603910.061048100.1934740.1655660.1792320.183474

1000.3302480.3301130.3295350.3243311002.0358522.0322921.9280952.015852

10003.3310313.3306723.313813.322372100029.36641528.27328727.63552528.866415

1000010.07634710.0641779.9985510.0204271000090.73114190.42309790.37168590.131141

10000010.55887110.36270710.33538710.44766310000092.6272492.32253592.22773392.72724

100000010.63610510.50094510.45151210.55237100000092.94322192.87292892.97736592.643221

1000000010.89985610.72244210.67713710.780651000000093.39905393.33095593.50619693.199053

10.00952380950.01523809520.00190476190.01400560220.02941176470.0224089636

100.02978171810.03355844320.02304442450.14424677220.07361195820.0516865315

1000.00040878370.00215898360.01791683830.00174865360.05292968250.0098238968

10000.00010777440.00516987080.00259949550.03722374690.05894114080.0170262526

100000.0012077790.00772075440.00554963020.00339512980.0039617710.0066129445

1000000.01857812260.02116552040.01053218660.00328958310.0043130617-0.001079596

10000000.01270765940.01735531950.00787271280.0007563005-0.00036736410.0032277771

100000000.01627672880.02043320570.01093647480.000729108-0.0011471530.0021413493


10.95238095241.52380952380.190476190511.40056022412.94117647062.2408963585

102.9781718093.35584432212.3044424531014.42467721767.36119581965.1686531524

1000.04087837020.21589835521.79168382551000.17486536355.29296825110.9823896826

10000.0107774440.5169870830.259949547210003.72237469235.89411407561.7026252609

100000.1207778970.77207543570.5549630238100000.33951297930.39617709650.6612944502

1000001.85781226042.11655204421.05321866321000000.32895830640.4313061687-0.1079596024

10000001.2707659431.73553194520.787271280210000000.0756300451-0.03673640710.3227777096

100000001.62767287932.04332057231.0936474757100000000.0729108035-0.11471529590.2141349335


10.0003390.0003360.0003370.000331

100.0625910.0602510.0597240.061591

1000.3309420.3224250.320170.329942

10003.4886353.4722373.4850153.468635

1000013.66896813.20405813.44748913.468968

10000016.55792416.20258116.19775316.357924

100000016.63011816.323916.40334416.530118

1000000016.58454916.51167516.43258516.544549

0.00884955750.0058997050.0235988201

0.03738556660.04580530750.0159767379

0.02573562740.03254951020.0030216775

0.00470040570.00103765510.0057329013

0.03401207760.01620305210.0146316825

0.0214606010.02175218340.0120788089

0.01841345920.01363634340.0060131864

0.00439408990.00916298660.0024118835

Globus XIOGlobus IO over XIOGlobus IO

10.88495575220.58997050152.3598820059

103.73855666154.58053074721.597673787

1002.57356273913.25495101860.3021677514

10000.47004057460.10376551290.5732901264

100003.40120775761.62030520521.4631682509

1000002.14606009792.17521834261.2078808913

10000001.84134592431.3636343410.6013186437

100000000.43940899450.91629865850.2411883495

88.888888888994.444444444450

51.428571428654.285714285725.7142857143

100105.882352941264.7058823529

859555

32.692307692336.538461538519.2307692308

8.333333333310.1010101019.0909090909

6.13417612417.05358425516.1772733803

2.37240220052.90979013852.415698859

Globus XIO

Globus IO over XIO

Globus IO



Loopback

SummaryProvides a simple and uniform IO APIAppropriate for most byte stream oriented applicationsAbility to quickly adapt to Different transport protocolsDifferent data access mechanismsProvides a convenient framework for research and development

the globus extensible input/output system (xio): a protocol independent io system for the grid

Documents