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This commit is contained in:
doinachiroiu 2020-09-03 14:59:54 +00:00
parent 7e22952c42
commit 1869fe515f
3 changed files with 26 additions and 28 deletions
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3
oss-internship-2020/pffft/CMakeLists.txt
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@ -19,8 +19,6 @@ project(pffft CXX C)
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED True)
set(PFFFT_ROOT_DIR https://bitbucket.org/jpommier/pffft.git)
add_library(pffft STATIC
master/pffft.c
master/pffft.h
@ -45,7 +43,6 @@ endif()
target_link_libraries(pffft PUBLIC ${MATH_LIBS})
# Adding dependencies
set(SAPI_ROOT "../.." CACHE PATH "Path to the Sandboxed API source tree")
# Then configure:

15
oss-internship-2020/pffft/README.md
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@ -4,16 +4,13 @@ Build System: CMake
OS: Linux
### Check out the PFFFT library & CMake set up
`git checkout -b master`
`git submodule update --init --recursive`
`mkdir -p build && cd build`
`cmake .. -G Ninja -DPFFFT_ROOT_DIR=$PWD`
`ninja`
```
git submodule update --init --recursive
mkdir -p build && cd build
cmake .. -G Ninja -DPFFFT_ROOT_DIR=$PWD
ninjas
```
### For testing:
`cd build`, then `./pffft_sandboxed`

32
oss-internship-2020/pffft/main_pffft_sandboxed.cc
View File

@ -136,51 +136,55 @@ absl::Status PffftMain() {
if (simd_size_iter == 0) simd_size_iter = 1;
if (complex) {
api.cffti(n, work_array.PtrBoth()).IgnoreError();
SAPI_RETURN_IF_ERROR(api.cffti(n, work_array.PtrBoth()))
} else {
api.rffti(n, work_array.PtrBoth()).IgnoreError();
SAPI_RETURN_IF_ERROR(api.rffti(n, work_array.PtrBoth()));
}
t0 = UclockSec();
for (int iter = 0; iter < simd_size_iter; ++iter) {
if (complex) {
api.cfftf(n, x_array.PtrBoth(), work_array.PtrBoth()).IgnoreError();
api.cfftb(n, x_array.PtrBoth(), work_array.PtrBoth()).IgnoreError();
SAPI_RETURN_IF_ERROR(
api.cfftf(n, x_array.PtrBoth(), work_array.PtrBoth()));
SAPI_RETURN_IF_ERROR(
api.cfftb(n, x_array.PtrBoth(), work_array.PtrBoth()));
} else {
api.rfftf(n, x_array.PtrBoth(), work_array.PtrBoth()).IgnoreError();
api.rfftb(n, x_array.PtrBoth(), work_array.PtrBoth()).IgnoreError();
SAPI_RETURN_IF_ERROR(
api.rfftf(n, x_array.PtrBoth(), work_array.PtrBoth()));
SAPI_RETURN_IF_ERROR(
api.rfftb(n, x_array.PtrBoth(), work_array.PtrBoth()));
}
}
t1 = UclockSec();
flops = (simd_size_iter * 2) *
((complex ? 5 : 2.5) * n * log((double)n) / M_LN2);
((complex ? 5 : 2.5) * static_cast<double>(n) * log(static_cast<double>(n)) / M_LN2);
ShowOutput("FFTPack", n, complex, flops, t0, t1, simd_size_iter);
}
// PFFFT benchmark
{
SAPI_ASSIGN_OR_RETURN(
PFFFT_Setup *s,
PFFFT_Setup * s,
api.pffft_new_setup(n, complex ? PFFFT_COMPLEX : PFFFT_REAL));
sapi::v::RemotePtr s_reg(s);
t0 = UclockSec();
for (int iter = 0; iter < max_iter; ++iter) {
SAPI_RETURN_IF_ERROR(
api.pffft_transform(&s_reg, x_array.PtrBoth(), z_array.PtrBoth(),
y_array.PtrBoth(), PFFFT_FORWARD)
.IgnoreError();
y_array.PtrBoth(), PFFFT_FORWARD));
SAPI_RETURN_IF_ERROR(
api.pffft_transform(&s_reg, x_array.PtrBoth(), z_array.PtrBoth(),
y_array.PtrBoth(), PFFFT_FORWARD)
.IgnoreError();
y_array.PtrBoth(), PFFFT_FORWARD));
}
t1 = UclockSec();
api.pffft_destroy_setup(&s_reg).IgnoreError();
SAPI_RETURN_IF_ERROR(api.pffft_destroy_setup(&s_reg));
flops = (max_iter * 2) * ((complex ? 5 : 2.5) * static_cast<double>(n) *
log((double)n) / M_LN2);
log(static_cast<double>(n)) / M_LN2);
ShowOutput("PFFFT", n, complex, flops, t0, t1, max_iter);
LOG(INFO) << "n = " << n << " SUCCESSFULLY";