bscpkgs/garlic/exp/nbody/weak-scaling-mpi.nix

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{
stdenv
, stdexp
, bsc
, targetMachine
, stages
}:
with stdenv.lib;
let
# Initial variable configuration
varConf = with bsc; {
numProcs = [ 1 2 4 8 16 32 48 ];
};
# Generate the complete configuration for each unit
genConf = with bsc; c: targetMachine.config // rec {
# nbody options
particles = 1024 * 64;
timesteps = 10;
blocksize = 1024;
inherit (c) numProcs;
cc = icc;
mpi = impi;
gitBranch = "garlic/mpi+send";
# Repeat the execution of each unit 30 times
loops = 30;
# Resources
qos = "debug";
ntasksPerNode = numProcs;
nodes = 1;
time = "02:00:00";
cpuBind = "sockets,verbose";
jobName = "nbody-bs-${toString numProcs}-${gitBranch}";
};
# Compute the array of configurations
configs = stdexp.buildConfigs {
inherit varConf genConf;
};
exec = {nextStage, conf, ...}: with conf; stages.exec {
inherit nextStage;
argv = [ "-t" timesteps "-p" particles ];
};
program = {nextStage, conf, ...}: with conf;
let
customPkgs = stdexp.replaceMpi conf.mpi;
in
customPkgs.apps.nbody.override {
inherit cc blocksize mpi gitBranch;
};
pipeline = stdexp.stdPipeline ++ [ exec program ];
in
stdexp.genExperiment { inherit configs pipeline; }