Mpi Test Suite Multi Threaded

Presenter : Nageeb Yahya Alsurmi GS21565 Lecturer : Assoc. Prof. Dr Mohamed Othman Test Suite for Evaluating Performance of MPI Implementations That Support MPI_THREAD_MULTIPLE By: Rajeev Thakur and William Gropp Argonne National Laboratory, USA

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Outline

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],T P1 T T m T P1 T T m T P2 P2 T MPI Call MPI Call MPI Call MPI Call

[object Object],[object Object],T T P1 T T P1 T 1 2 3 MPI Call MPI Call MPI Call T MPI Call MPI Call MPI Call

[object Object],[object Object],Process 0 Process 1 Thread 0 Thread 1 Thread 1 Thread 0 MPI_Recv(src1) MPI_Send(dest1) MPI_Recv(src0) MPI_Send(dest0) Buffer full Wait for thread 1 to complete the send operation to start reading from the buffer The buffer is full but still a data are sending so thread 1 wait for thread 0 to empty (read) the buffer

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],Single thread Multiple thread Ping Pong Ping Pong The difference = Overhead MPI_Init(&argc,&argv) MPI_Init_thread(MPI_THREAD_MULTIPLE);

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],P1 P2 P3 P4 P4 P2 P3 P2 P1 P2 P3 P4 P1 P1 P1 T1 T2 T1 T2 T1 T2 T1 T1 T2 T2 T1 T1 T2 T2 T1 T1 T2 + + Large message Large message cumulative bandwidth

[object Object],P1 P2 P3 P4 P4 P2 P3 P2 P1 P2 P3 P4 P1 P1 P1 T1 T2 T1 T2 T1 T2 T1 T1 T2 T2 T1 T1 T2 T2 T1 T1 T2 Short message series Short message series Process Mutti threading

[object Object],[object Object],P1 P2 P0 P1 P2 P3 P1 P1 P0 T1 T2 T1 T2 T1 T2 T1 T2 T2 T1 T1 T2 Short message series Short message series Long message P2 Long message Process Multi Threads

[object Object],[object Object]

[object Object],T1 T2 T1 T2 P1 P1 P1 T1 T2 Multi Threads

3-2 Concurrent Collectives test 2/3 ,[object Object],P1 P1 P1 Process

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Any Questions @ MPI Multiple threading Ada Soalan !!!!

Mpi Test Suite Multi Threaded

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