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Cycles: Add support of processor groups

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Currently for windows only, this is an initial commit towards native
support of NUMA.

Current commit makes it so Cycles will use all logical processors on
Windows running on system with more than 64 threads.

Reviewers: juicyfruit, dingto, lukasstockner97, maiself, brecht

Subscribers: LazyDodo

Differential Revision: https://developer.blender.org/D2049
This commit is contained in:
Sergey Sharybin
2016-06-04 01:29:13 +02:00
parent 9d090ed1cd
commit b62faa54de
8 changed files with 251 additions and 44 deletions
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23
intern/cycles/util/util_task.cpp
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@@ -16,6 +16,7 @@
#include "util_debug.h"
#include "util_foreach.h"
#include "util_logging.h"
#include "util_system.h"
#include "util_task.h"
#include "util_time.h"
@@ -198,12 +199,30 @@ void TaskScheduler::init(int num_threads)
/* automatic number of threads */
num_threads = system_cpu_thread_count();
}
VLOG(1) << "Creating pool of " << num_threads << " threads.";
/* launch threads that will be waiting for work */
threads.resize(num_threads);
for(size_t i = 0; i < threads.size(); i++)
threads[i] = new thread(function_bind(&TaskScheduler::thread_run, i + 1));
int num_groups = system_cpu_group_count();
int thread_index = 0;
for(int group = 0; group < num_groups; ++group) {
/* NOTE: That's not really efficient from threading point of view,
* but it is simple to read and it doesn't make sense to use more
* user-specified threads than logical threads anyway.
*/
int num_group_threads = (group == num_groups - 1)
? (threads.size() - thread_index)
: system_cpu_group_thread_count(group);
for(int group_thread = 0;
group_thread < num_group_threads && thread_index < threads.size();
++group_thread, ++thread_index)
{
threads[thread_index] = new thread(function_bind(&TaskScheduler::thread_run,
thread_index + 1),
group);
}
}
}
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