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SYCL update to use buffer on reduction variable

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This commit is contained in:
Peter Boyle 2024-06-08 16:05:18 +00:00
parent a6479ca50f
commit a49a161f8d
1 changed files with 38 additions and 24 deletions
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30
Grid/lattice/Lattice_reduction_sycl.h
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@ -9,14 +9,19 @@ inline typename vobj::scalar_objectD sumD_gpu_tensor(const vobj *lat, Integer os
{
typedef typename vobj::scalar_object sobj;
typedef typename vobj::scalar_objectD sobjD;
sobj *mysum =(sobj *) malloc_shared(sizeof(sobj),*theGridAccelerator);
// sobj *mysum =(sobj *) malloc_shared(sizeof(sobj),*theGridAccelerator);
// sobj *mysum =(sobj *) malloc(sizeof(sobj));
sobj identity; zeroit(identity);
sobj ret ;
Integer nsimd= vobj::Nsimd();
{
sycl::buffer<sobj, 1> abuff(&ret, {1});
theGridAccelerator->submit([&](cl::sycl::handler &cgh) {
auto Reduction = cl::sycl::reduction(mysum,identity,std::plus<>());
auto Reduction = cl::sycl::reduction(abuff,cgh,identity,std::plus<>());
cgh.parallel_for(cl::sycl::range<1>{osites},
Reduction,
[=] (cl::sycl::id<1> item, auto &sum) {
@ -24,10 +29,14 @@ inline typename vobj::scalar_objectD sumD_gpu_tensor(const vobj *lat, Integer os
sum +=Reduce(lat[osite]);
});
});
}
theGridAccelerator->wait();
ret = mysum[0];
free(mysum,*theGridAccelerator);
// acceleratorCopyFromDevice(mysum,&ret,sizeof(sobj));
// ret = mysum[0];
sobjD dret; convertType(dret,ret);
// free(mysum,*theGridAccelerator);
// free(mysum);
return dret;
}
@ -73,19 +82,24 @@ inline typename vobj::scalar_object sum_gpu_large(const vobj *lat, Integer osite
template<class Word> Word svm_xor(Word *vec,uint64_t L)
{
Word xorResult; xorResult = 0;
Word *d_sum =(Word *)cl::sycl::malloc_shared(sizeof(Word),*theGridAccelerator);
// Word *d_sum =(Word *)cl::sycl::malloc_shared(sizeof(Word),*theGridAccelerator);
Word identity; identity=0;
Word ret;
{
sycl::buffer<Word, 1> abuff(&ret, {1});
theGridAccelerator->submit([&](cl::sycl::handler &cgh) {
auto Reduction = cl::sycl::reduction(d_sum,identity,std::bit_xor<>());
// auto Reduction = cl::sycl::reduction(d_sum,identity,std::bit_xor<>());
auto Reduction = cl::sycl::reduction(abuff,cgh,identity,std::bit_xor<>());
cgh.parallel_for(cl::sycl::range<1>{L},
Reduction,
[=] (cl::sycl::id<1> index, auto &sum) {
sum ^=vec[index];
});
});
}
theGridAccelerator->wait();
Word ret = d_sum[0];
free(d_sum,*theGridAccelerator);
// ret = d_sum[0];
// free(d_sum,*theGridAccelerator);
return ret;
}