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The Zero-Force MPI Toolkit – Toward Tractable Toolkits for HPC

This toolkit aims to provide a new approach to resource sharing and automation in HPC environments, with features such as resource aggregation, virtualization, and task automation. It provides a unified and coherent interface for clients and utilizes service-drivers at the provider side. The toolkit includes features to upload and compile computational applications, stage input data, and collect results. Experimental evaluations have shown the feasibility of this approach without affecting the performance of MPI applications.

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The Zero-Force MPI Toolkit – Toward Tractable Toolkits for HPC

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  1. The Zero-Force MPI Toolkit –Toward Tractable Toolkits for HPC Magdalena Slawinska Emory University

  2. The Zero-Force MPI ToolkitTowards Tractable Toolkits for HPC Goals • New approach to resource sharing • Aggregation and virtualization resourcesat the client side • Automating tasks • MPI environment configuration • Uploading and compiling computational applications • Staging input data / result collection

  3. Client side Provider side The Zero-Force MPI Toolkit –Toward Tractable Toolkits for HPC Architecture • Client side: Interactive console • Unified and coherent interface • Resource virtualization • Mediators – “service-drivers” • Provider side: Access daemons • E.g. sshd, ftpd • Prototype implementation • FT-MPI • Java • JSch (SSH2 implementation)

  4. The Zero-Force MPI Toolkit –Toward Tractable Toolkits for HPC Add computational resource to DVM ZF-MPI Console • Upload FT-MPI • Decompress sources • Install • Launch FT-M PI daemons DVM Assembly Synchronize data, source files across DVM nodes Data Sync Invoke standard shell commands Compile and build Application launch Run MPI programs

  5. The Zero-Force MPI Toolkit –Toward Tractable Toolkits for HPC Example Session Set ZF-MPI VM: login user “joe” on hosts and install FT-MPIa zf-mpi> add ft_mpi joe@{lab6a,lab6b,lab6c,lab6d,compute} zf-mpi> ft_mpi setNS compute zf-mpi> ft_mpi add lab6a,lab6b,lab6c,lab6d,compute zf-mpi> sync ~/NPB3.2.1/NPB3.2-MPI ~/zf-mpi/ zf-mpi> cd ~/zf-mpi/NPB3.2-MPI zf-mpi> make bt NPROCS=4 CLASS=B zf-mpi> mv bin/bt.B.4 $HARNESS_BIN_DIR/$HARNESS_ARCH/ zf-mpi> ft_mpi ftmpirun compute -np 4 -o bt.B.4 > log zf-mpi> cat log | grep "Time in seconds" zf-mpi> ft_mpi console haltall

  6. The Zero-Force MPI Toolkit –Toward Tractable Toolkits for HPC Experimental Evaluation • NAS Parallel Benchmarks 3.2 for MPI • Linux/i86 • Pentium 4 (2.4-2.8 GHz), 1 GB RAM • Linux Mandriva 2006 (kernel 2.6.12-12) • Solaris (non-GNU-based UNIX) • Sun Blade 2500, UltraSPARC-III, 1280 MHz • 1 MB cache memory per processor, 2 GB RAM • connected directly to 100-Mbit HP network switches • SunOS 5.10 • Homogeneous cluster: class A, up to 16 processes • Heterogeneous cluster: class B, 8, 9 processes

  7. BT FT LU IS MG The Zero-Force MPI Toolkit –Toward Tractable Toolkits for HPC

  8. SP EP CG Class B The Zero-Force MPI Toolkit –Toward Tractable Toolkits for HPC

  9. The Zero-Force MPI Toolkit –Toward Tractable Toolkits for HPC Summary ZF-MPI • Implements the new resource sharing model • Demonstrates feasibility of the run-not-install approach • Significantly reduces efforts such as deployment and execution • Does not affect performance of MPI applications

  10. Contacts Magdalena Slawinska Emory University magg@mathcs.emory.edu 10 Engelmann_Toolkit_0611

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