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- client: fix inconsistent integer benchmarks on Windows 

with multicore machines.  I don't know why this happened,
        but I fixed it by doing integer benchmarks only on CPU zero.
        This is OK since cores have separate integer units
        (but not necessarily FP units)

    client/
        cs_benchmark.C

svn path=/trunk/boinc/; revision=12808
This commit is contained in:
David Anderson 2007-06-03 20:13:38 +00:00
parent 610d4cfa77
commit ed84cca6d6
2 changed files with 27 additions and 5 deletions
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10
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@ -5706,3 +5706,13 @@ David 3 June 2007
sched/
feeder.C
start
David 3 June 2007
- client: fix inconsistent integer benchmarks on Windows
with multicore machines. I don't know why this happened,
but I fixed it by doing integer benchmarks only on CPU zero.
This is OK since cores have separate integer units
(but not necessarily FP units)
client/
cs_benchmark.C

22
client/cs_benchmark.C
View File

@ -74,10 +74,10 @@
#define DEFAULT_CACHE 1e6
#define FP_START 2
#define FP_END 22
#define INT_START 37
#define INT_END 57
#define OVERALL_END 60
#define FP_END 12
#define INT_START 17
#define INT_END 27
#define OVERALL_END 30
#define BM_FP_INIT 0
#define BM_FP 1
@ -151,12 +151,20 @@ int cpu_benchmarks(BENCHMARK_DESC* bdp) {
host_info.clear_host_info();
whetstone(host_info.p_fpops);
#ifdef _WIN32
// Windows: do integer benchmark only on CPU zero.
// There's a mysterious bug/problem that gives wildly
// differing benchmarks on multi-CPU and multi-core machines,
// if you use all the CPUs at once.
//
if (bdp->ordinal == 0) {
#endif
dhrystone(vax_mips, int_loops, int_time);
host_info.p_iops = vax_mips*1e6;
host_info.p_membw = 1e9;
host_info.m_cache = 1e6; // TODO: measure the cache
#ifdef _WIN32
}
bdp->host_info = host_info;
bdp->int_loops = int_loops;
bdp->int_time = int_time;
@ -451,7 +459,11 @@ bool CLIENT_STATE::cpu_benchmarks_poll() {
);
}
p_fpops += benchmark_descs[i].host_info.p_fpops;
#ifdef _WIN32
p_iops += benchmark_descs[0].host_info.p_iops;
#else
p_iops += benchmark_descs[i].host_info.p_iops;
#endif
p_membw += benchmark_descs[i].host_info.p_membw;
m_cache += benchmark_descs[i].host_info.m_cache;
}