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author | Moritz Pflanzer <moritz.pflanzer@arm.com> | 2017-08-31 14:56:32 +0100 |
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committer | Anthony Barbier <anthony.barbier@arm.com> | 2018-11-02 16:35:24 +0000 |
commit | beabe3bdf47306d0940ddf2ddf52ada6903a0875 (patch) | |
tree | 97afa72f2d60858898ab2dadb95e4cda7176e88b /src/runtime/IScheduler.cpp | |
parent | 7655a67384895868c0afa72bfda9a9b2fcfdf323 (diff) | |
download | ComputeLibrary-beabe3bdf47306d0940ddf2ddf52ada6903a0875.tar.gz |
COMPMID-481: Add AArch64 GEMM
Change-Id: I34f94f99cb05f0eabafee13c5e623ee779b72360
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/83741
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
Reviewed-by: Pablo Tello <pablo.tello@arm.com>
Diffstat (limited to 'src/runtime/IScheduler.cpp')
-rw-r--r-- | src/runtime/IScheduler.cpp | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/src/runtime/IScheduler.cpp b/src/runtime/IScheduler.cpp new file mode 100644 index 0000000000..1745764bbb --- /dev/null +++ b/src/runtime/IScheduler.cpp @@ -0,0 +1,159 @@ +/* + * Copyright (c) 2016, 2017 ARM Limited. + * + * SPDX-License-Identifier: MIT + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to + * deal in the Software without restriction, including without limitation the + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in all + * copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#include "arm_compute/runtime/IScheduler.h" + +#include <array> +#include <cstdlib> +#include <cstring> +#include <fcntl.h> +#include <sched.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <unistd.h> + +namespace +{ +unsigned int get_cpu_impl() +{ +#ifndef BARE_METAL + int fd = open("/proc/cpuinfo", 0); // NOLINT + std::array<char, 1200> buff{ {} }; + char *pos = nullptr; + char *end = nullptr; + bool foundid = false; + + int cpu = sched_getcpu(); + + if(fd == -1) + { + return 0; + } + + int charsread = read(fd, buff.data(), 1200); + pos = buff.data(); + end = buff.data() + charsread; + + close(fd); + + /* So, to date I've encountered two formats for /proc/cpuinfo. + * + * One of them just lists processor : n for each processor (with no + * other info), then at the end lists part information for the current + * CPU. + * + * The other has an entire clause (including part number info) for each + * CPU in the system, with "processor : n" headers. + * + * We can cope with either of these formats by waiting to see + * "processor: n" (where n = our CPU ID), and then looking for the next + * "CPU part" field. + */ + while(pos < end) + { + if(foundid && strncmp(pos, "CPU part", 8) == 0) + { + /* Found part number */ + pos += 11; + + for(char *ch = pos; ch < end; ch++) + { + if(*ch == '\n') + { + *ch = '\0'; + break; + } + } + + return strtoul(pos, nullptr, 0); + } + + if(strncmp(pos, "processor", 9) == 0) + { + /* Found processor ID, see if it's ours. */ + pos += 11; + + for(char *ch = pos; ch < end; ch++) + { + if(*ch == '\n') + { + *ch = '\0'; + break; + } + } + + int num = strtol(pos, nullptr, 0); + + if(num == cpu) + { + foundid = true; + } + } + + while(pos < end) + { + char ch = *pos++; + if(ch == '\n' || ch == '\0') + { + break; + } + } + } +#endif /* BARE_METAL */ + + return 0; +} +} // namespace + +namespace arm_compute +{ +IScheduler::IScheduler() +{ + switch(get_cpu_impl()) + { + case 0xd03: + _info.CPU = CPUTarget::A53; + break; + default: +#ifdef __aarch64__ + _info.CPU = CPUTarget::ARMV8; +#else /* __aarch64__ */ + _info.CPU = CPUTarget::INTRINSICS; +#endif /* __aarch64__ */ + break; + } + + _info.L1_size = 31000; + _info.L2_size = 500000; +} + +void IScheduler::set_target(CPUTarget target) +{ + _info.CPU = target; +} + +CPUInfo IScheduler::cpu_info() const +{ + return _info; +} +} // namespace arm_compute |