One-sided vs. Two-sided Communication Paradigms on Relaxed ...

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Cray Software StackF U T U R E T E C H N O L O G I E S G R O U P uGNI Multiplecommunication protocols RDMA (Block TransferEngine (BTE)).• Optimized for largemessages FMA• Optimized for smallmessages DMAPP communicationprotocol High-level protocol forsingle-<strong>sided</strong>communication support collectivesIOCTLGNIKernel LevelGNI (kGNI)GNI CoreFortran, CMPICH2DIRECTSHMEMHardware (Gemini/Arie)UPCDMAPPGeneric Hardware Abstraction Layer (GHAL)libpgasDIRECTLAWRENCE BERKELEY NATIONAL LABORATORY
Hopper HardwareF U T U R E T E C H N O L O G I E S G R O U PHopper Node(Cray XE 6)2 twelve-core AMD 'MagnyCours'2.1-GHz processors per node.Four DDR3 1333-MHz memorychannels per twelve-core'MagnyCours' processorHopper NodeCore 0DDR3 Core 1Core 2Core 3DDR3 Core 4L3Cache6MBHT3L3Cache6MBCore 0Core 1Core 2Core 3Core 4DDR3DDR3201.6 Gflops/nodeL1: 64 KB, L2 caches::512KBCore 5Core 0HT3HT3HT3Core 5Core 06-MB L3 cache shared between 6cores.DDR3Core 1Core 2HT3Core 1Core 2DDR3DDR3Core 3Core 4L3Cache6MBL3Cache6MBCore 3Core 4DDR3Core 5Core 5HT3HT3HT3HT3NIC 0NetLinkBlockNIC 13D torus48 port YARC Router...LAWRENCE BERKELEY NATIONAL LABORATORY
Page 1 and 2: F U T U R E T E C H N O L O G I E S
Page 3: MotivationF U T U R E T E C H N O L
Page 7 and 8: MicrobenchmarkF U T U R E T E C H N
Page 9 and 10: DMAPP vs. uGNI (FM
Page 11 and 12: Relaxed Ordering and ConcurrencyF U
Page 13 and 14: Communication <str
Page 15 and 16: Communication Para
Page 17 and 18: Relaxed Ordering andCommuni
Page 19 and 20: UPC Shared Memory Ordering Challeng
Page 21 and 22: Cray MPI Method to ExploitGemini Re
Page 23 and 24: MPI Eager 1F U T U R E T E C H N O
Page 25 and 26: MPI Rendezvous 1F U T U R E T E C H
Page 27 and 28: 1648Bwindow size1648BF U T U R E T
Page 29 and 30: window sizwindowwindow sizewindow s
Page 31: ConclusionF U T U R E T E C H N O L

One-sided vs. Two-sided Communication Paradigms on Relaxed ...

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