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Property to initialise reduction

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This commit is contained in:
Peter Boyle 2024-06-11 16:47:35 +00:00
parent a49a161f8d
commit 1739146599
1 changed files with 28 additions and 36 deletions
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34
Grid/lattice/Lattice_reduction_sycl.h
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@ -9,19 +9,17 @@ inline typename vobj::scalar_objectD sumD_gpu_tensor(const vobj *lat, Integer os
{ {
typedef typename vobj::scalar_object sobj; typedef typename vobj::scalar_object sobj;
typedef typename vobj::scalar_objectD sobjD; typedef typename vobj::scalar_objectD sobjD;
// sobj *mysum =(sobj *) malloc_shared(sizeof(sobj),*theGridAccelerator); static Vector<sobj> mysum;
// sobj *mysum =(sobj *) malloc(sizeof(sobj)); mysum.resize(1);
sobj *mysum_p = & mysum[0];
sobj identity; zeroit(identity); sobj identity; zeroit(identity);
sobj ret ; sobj ret ;
Integer nsimd= vobj::Nsimd(); Integer nsimd= vobj::Nsimd();
{ const cl::sycl::property_list PropList ({ cl::sycl::property::reduction::initialize_to_identity() });
sycl::buffer<sobj, 1> abuff(&ret, {1});
theGridAccelerator->submit([&](cl::sycl::handler &cgh) { theGridAccelerator->submit([&](cl::sycl::handler &cgh) {
auto Reduction = cl::sycl::reduction(mysum_p,identity,std::plus<>(),PropList);
auto Reduction = cl::sycl::reduction(abuff,cgh,identity,std::plus<>());
cgh.parallel_for(cl::sycl::range<1>{osites}, cgh.parallel_for(cl::sycl::range<1>{osites},
Reduction, Reduction,
[=] (cl::sycl::id<1> item, auto &sum) { [=] (cl::sycl::id<1> item, auto &sum) {
@ -29,14 +27,10 @@ inline typename vobj::scalar_objectD sumD_gpu_tensor(const vobj *lat, Integer os
sum +=Reduce(lat[osite]); sum +=Reduce(lat[osite]);
}); });
}); });
}
theGridAccelerator->wait(); theGridAccelerator->wait();
// acceleratorCopyFromDevice(mysum,&ret,sizeof(sobj)); ret = mysum[0];
// ret = mysum[0];
sobjD dret; convertType(dret,ret);
// free(mysum,*theGridAccelerator); // free(mysum,*theGridAccelerator);
// free(mysum); sobjD dret; convertType(dret,ret);
return dret; return dret;
} }
@ -82,23 +76,21 @@ inline typename vobj::scalar_object sum_gpu_large(const vobj *lat, Integer osite
template<class Word> Word svm_xor(Word *vec,uint64_t L) template<class Word> Word svm_xor(Word *vec,uint64_t L)
{ {
Word xorResult; xorResult = 0; Word xorResult; xorResult = 0;
// Word *d_sum =(Word *)cl::sycl::malloc_shared(sizeof(Word),*theGridAccelerator); static Vector<Word> d_sum;
d_sum.resize(1);
Word *d_sum_p=&d_sum[0];
Word identity; identity=0; Word identity; identity=0;
Word ret; const cl::sycl::property_list PropList ({ cl::sycl::property::reduction::initialize_to_identity() });
{
sycl::buffer<Word, 1> abuff(&ret, {1});
theGridAccelerator->submit([&](cl::sycl::handler &cgh) { theGridAccelerator->submit([&](cl::sycl::handler &cgh) {
// auto Reduction = cl::sycl::reduction(d_sum,identity,std::bit_xor<>()); auto Reduction = cl::sycl::reduction(d_sum_p,identity,std::bit_xor<>(),PropList);
auto Reduction = cl::sycl::reduction(abuff,cgh,identity,std::bit_xor<>());
cgh.parallel_for(cl::sycl::range<1>{L}, cgh.parallel_for(cl::sycl::range<1>{L},
Reduction, Reduction,
[=] (cl::sycl::id<1> index, auto &sum) { [=] (cl::sycl::id<1> index, auto &sum) {
sum ^=vec[index]; sum ^=vec[index];
}); });
}); });
}
theGridAccelerator->wait(); theGridAccelerator->wait();
// ret = d_sum[0]; Word ret = d_sum[0];
// free(d_sum,*theGridAccelerator); // free(d_sum,*theGridAccelerator);
return ret; return ret;
} }