diff options
Diffstat (limited to 'src/experiment.cpp')
| -rw-r--r-- | src/experiment.cpp | 35 |
1 files changed, 30 insertions, 5 deletions
diff --git a/src/experiment.cpp b/src/experiment.cpp index 4bf4eff..9b6af7c 100644 --- a/src/experiment.cpp +++ b/src/experiment.cpp @@ -53,7 +53,7 @@ Experiment::Experiment() : seconds (DEFAULT_SECONDS), iterations (DEFAULT_ITERATIONS), experiments (DEFAULT_EXPERIMENTS), - prefetch (DEFAULT_PREFETCH), + prefetch_hint (NONE), output_mode (TABLE), access_pattern (RANDOM), stride (1), @@ -80,7 +80,7 @@ Experiment::~Experiment() { // -i or --iters iterations // -e or --experiments experiments // -g or --loop cycles to execute for each iteration (latency hiding) -// -f or --prefetch prefetch data +// -f or --prefetch use of prefetching // -a or --access memory access pattern // random random access pattern // forward <stride> exclusive OR and mask @@ -214,7 +214,25 @@ int Experiment::parse_args(int argc, char* argv[]) { } } else if (strcasecmp(argv[i], "-f") == 0 || strcasecmp(argv[i], "--prefetch") == 0) { - this->prefetch = true; + i++; + if (i == argc) { + error = 1; + break; + } + if (strcasecmp(argv[i], "none") == 0) { + this->prefetch_hint = Experiment::NONE; + } else if (strcasecmp(argv[i], "nta") == 0) { + this->prefetch_hint = Experiment::NTA; + } else if (strcasecmp(argv[i], "t0") == 0) { + this->prefetch_hint = Experiment::T0; + } else if (strcasecmp(argv[i], "t1") == 0) { + this->prefetch_hint = Experiment::T1; + } else if (strcasecmp(argv[i], "t2") == 0) { + this->prefetch_hint = Experiment::T2; + } else { + error = 1; + break; + } } else if (strcasecmp(argv[i], "-a") == 0 || strcasecmp(argv[i], "--access") == 0) { i++; @@ -346,7 +364,7 @@ int Experiment::parse_args(int argc, char* argv[]) { printf(" [-n|--numa] <placement> # numa placement\n"); printf(" [-s|--seconds] <number> # run each experiment for <number> seconds\n"); printf(" [-g|--loop] <number> # cycles to execute for each iteration (latency hiding)\n"); - printf(" [-f|--prefetch] # prefetch data\n"); + printf(" [-f|--prefetch] <hint> # use of prefetching\n"); printf(" [-x|--strict] # fail rather than adjust options to sensible values\n"); printf("\n"); printf("<pattern> is selected from the following:\n"); @@ -363,6 +381,13 @@ int Experiment::parse_args(int argc, char* argv[]) { printf(" both # header and results in csv format\n"); printf(" table # human-readable table of values\n"); printf("\n"); + printf("<hint> is selected from the following:\n"); + printf(" none # do not use prefetching\n"); + printf(" nta # use the NTA hint (non-temporal, only used once)\n"); + printf(" t0 # use the T0 hint (prefetch into all caches)\n"); + printf(" t1 # use the T1 hint (prefetch into all caches except L1)\n"); + printf(" t2 # use the T2 hint (prefetch into all caches except L1 & L2)\n"); + printf("\n"); printf("<placement> is selected from the following:\n"); printf(" local # all chains are allocated locally\n"); printf(" xor <mask> # exclusive OR and mask\n"); @@ -656,7 +681,7 @@ void Experiment::print() { printf("num_threads = %d\n", num_threads); printf("bytes_per_test = %d\n", bytes_per_test); printf("loop length = %d\n", loop_length); - printf("prefetch = %s\n", prefetch?"yes":"no"); + printf("prefetch hint = %s\n", prefetch_hint_string(prefetch_hint)); printf("iterations = %d\n", iterations); printf("experiments = %d\n", experiments); printf("access_pattern = %d\n", access_pattern); |