132 lines
3.6 KiB
Nix
132 lines
3.6 KiB
Nix
#######################################################################
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# Saiph, granularity experiment:
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#
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# App:Heat 3D - garlic/tampi+isend+oss+task+simd branch
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# App details:
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# 3D mesh of ~400*400*400 points
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# nbgx = global blocks in the X dimension
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# nbgy = global blocks in the Y dimension
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# nbgz = global blocks in the Z dimension
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# --> nbgx*nbgy*nbgz = global distributed blocks
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# nbly = local blocks in the Y dimension
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# nblz = local blocks in the Z dimension
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# --> nbly*nblz = local blocks (#tasks)
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#
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# Granularity experiment configuration:
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# Single-core run
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# MPI binded to sockets: MPI procs = 2
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# Mesh distributed across third dimension to ensure contiguous
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# communications
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# --> nbgx = 1, nbgy = 1
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# First dimension cannot be locally blocked (simd reasons)
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# Second and third dimension local blocking limited by local mesh size
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#
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#######################################################################
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# Common packages, tools and options
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{
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stdenv
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, stdexp
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, bsc
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, targetMachine
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, stages
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, garlicTools
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}:
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with stdenv.lib;
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with garlicTools;
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let
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# Variable configurations
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varConf = with targetMachine.config; {
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# Local blocks per dimension
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nblx = [ 1 ]; # SIMD
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nbly = range2 1 (hw.cpusPerNode * 8);
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nblz = [ 8 ];
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sizex = [ 3 ];
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gitBranch = [ "garlic/tampi+isend+oss+task+simd" ];
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};
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# Generate the complete configuration for each unit
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genConf = c: targetMachine.config // rec {
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# Experiment, units and job names
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expName = "saiph-granularity";
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unitName = "${expName}"
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+ "-N${toString nodes}"
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+ "-nbg.x${toString nbgx}.y${toString nbgy}.z${toString nbgz}"
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+ "-nbl.x${toString nblx}.y${toString nbly}.z${toString nblz}";
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jobName = unitName;
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# saiph options
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totalTasks = ntasksPerNode * nodes;
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nodes = 1;
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enableManualDist = true; # allows to manually set nbg{x-y-z}
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nbgx = 1;
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nbgy = 1;
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nbgz = totalTasks; # forcing distribution by last dim
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inherit (c) nblx nbly nblz gitBranch sizex;
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blocksPerTask = nblx * nbly * nblz * 1.0;
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blocksPerCpu = blocksPerTask / cpusPerTask;
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# fix a specific commit
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gitCommit = "8052494d7dc62bef95ebaca9938e82fb029686f6";
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# Repeat the execution of each unit 10 times
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loops = 10;
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# Resources
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inherit (targetMachine.config) hw;
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qos = "debug";
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ntasksPerNode = hw.socketsPerNode; # MPI binded to sockets
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cpusPerTask = hw.cpusPerSocket; # Using the 24 CPUs of each socket
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};
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#*** Compute the final set of configurations ***
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# Compute the array of configurations: cartesian product of all
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# factors
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allConfigs = stdexp.buildConfigs {
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inherit varConf genConf;
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};
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# Filter to remove non-desired configurations:
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# --> tasks/proc < 0.5
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# --> nblz > 50
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isGoodConfig = c:
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let
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maxNblz = c.cpusPerTask * 2;
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in
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! (c.blocksPerCpu < 0.5 || c.nblz > maxNblz);
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configs = filter (isGoodConfig) allConfigs;
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#*** Sets the env/argv of the program ***
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exec = {nextStage, conf, ...}: stages.exec {
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inherit nextStage;
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env = ''
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export OMP_NUM_THREADS=${toString conf.cpusPerTask}
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'';
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};
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#*** Configure the program according to the app ***
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program = {nextStage, conf, ...}: bsc.apps.saiph.override {
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inherit (conf) enableManualDist
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nbgx nbgy nbgz nblx nbly nblz
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sizex
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gitBranch gitCommit;
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L3SizeKB = conf.hw.cacheSizeKB.L3;
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cachelineBytes = conf.hw.cachelineBytes;
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};
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#*** Add stages to the pipeline ***
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pipeline = stdexp.stdPipeline ++ [ exec program ];
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in
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stdexp.genExperiment { inherit configs pipeline; }
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