forked from bartvdbraak/blender
Brecht Van Lommel
c621832d3d
In that case it can now fall back to CPU memory, at the cost of reduced performance. For scenes that fit in GPU memory, this commit should not cause any noticeable slowdowns. We don't use all physical system RAM, since that can cause OS instability. We leave at least half of system RAM or 4GB to other software, whichever is smaller. For image textures in host memory, performance was maybe 20-30% slower in our tests (although this is highly hardware and scene dependent). Once other type of data doesn't fit on the GPU, performance can be e.g. 10x slower, and at that point it's probably better to just render on the CPU. Differential Revision: https://developer.blender.org/D2056
51 lines
1.4 KiB
C
51 lines
1.4 KiB
C
/*
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* Copyright 2011-2013 Blender Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __UTIL_SYSTEM_H__
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#define __UTIL_SYSTEM_H__
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#include "util/util_string.h"
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CCL_NAMESPACE_BEGIN
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/* Get number of available CPU groups. */
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int system_cpu_group_count();
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/* Get number of threads/processors in the specified group. */
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int system_cpu_group_thread_count(int group);
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/* Get total number of threads in all groups. */
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int system_cpu_thread_count();
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/* Get current process groups. */
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unsigned short system_cpu_process_groups(unsigned short max_groups,
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unsigned short *grpups);
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string system_cpu_brand_string();
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int system_cpu_bits();
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bool system_cpu_support_sse2();
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bool system_cpu_support_sse3();
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bool system_cpu_support_sse41();
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bool system_cpu_support_avx();
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bool system_cpu_support_avx2();
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size_t system_physical_ram();
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CCL_NAMESPACE_END
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#endif /* __UTIL_SYSTEM_H__ */
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