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Merge branch 'feature/bgq-asm' of https://github.com/paboyle/Grid into feature/bgq-asm

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paboyle 2017-02-16 18:52:30 -05:00
commit cd0da81196
5 changed files with 38 additions and 12 deletions
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8
lib/Stencil.h
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@ -240,6 +240,10 @@ PARALLEL_FOR_LOOP
for(int o=0;o<Mergers[i].buffer_size/2;o++){
exchange(Mergers[i].mpointer[2*o],Mergers[i].mpointer[2*o+1],
Mergers[i].vpointers[0][o],Mergers[i].vpointers[1][o],Mergers[i].type);
// cobj temp1,temp2;
// exchange(temp1,temp2,Mergers[i].vpointers[0][o],Mergers[i].vpointers[1][o],Mergers[i].type);
// vstream(Mergers[i].mpointer[2*o],temp1);
// vstream(Mergers[i].mpointer[2*o+1],temp2);
}
}
mergetime+=usecond();
@ -1037,9 +1041,7 @@ PARALLEL_FOR_LOOP
int sx = (x+sshift)%rd;
gathermtime-=usecond();
Gather_plane_exchange(rhs,spointers,dimension,sx,cbmask,compress,permute_type);
gathermtime+=usecond();
gathermtime+=Gather_plane_exchange(rhs,spointers,dimension,sx,cbmask,compress,permute_type);
//spointers[0] -- low
//spointers[1] -- high

4
lib/communicator/Communicator_mpi3.cc
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@ -100,7 +100,7 @@ void CartesianCommunicator::Init(int *argc, char ***argv) {
int flag;
int provided;
mtrace();
// mtrace();
MPI_Initialized(&flag); // needed to coexist with other libs apparently
if ( !flag ) {
@ -511,7 +511,7 @@ void CartesianCommunicator::SendToRecvFromBegin(std::vector<CommsRequest_t> &lis
int myrank = _processor;
int ierr;
if ( (CommunicatorPolicy == CommunicatorPolicyIsend) ) {
if ( CommunicatorPolicy == CommunicatorPolicyIsend ) {
MPI_Request xrq;
MPI_Request rrq;

13
lib/cshift/Cshift_common.h
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@ -142,12 +142,12 @@ PARALLEL_NESTED_LOOP2
///////////////////////////////////////////////////////////////////
// Gather for when there *is* need to SIMD split with compression
///////////////////////////////////////////////////////////////////
template<class cobj,class vobj,class compressor> void
template<class cobj,class vobj,class compressor> double
Gather_plane_exchange(const Lattice<vobj> &rhs,
std::vector<cobj *> pointers,int dimension,int plane,int cbmask,compressor &compress,int type)
{
int rd = rhs._grid->_rdimensions[dimension];
double t1,t2;
if ( !rhs._grid->CheckerBoarded(dimension) ) {
cbmask = 0x3;
}
@ -186,13 +186,20 @@ Gather_plane_exchange(const Lattice<vobj> &rhs,
}
assert( (table.size()&0x1)==0);
t1=usecond();
PARALLEL_FOR_LOOP
for(int j=0;j<table.size()/2;j++){
// buffer[off+table[i].first]=compress(rhs._odata[so+table[i].second]);
cobj temp1 =compress(rhs._odata[so+table[2*j].second]);
cobj temp2 =compress(rhs._odata[so+table[2*j+1].second]);
exchange(pointers[0][j],pointers[1][j],temp1,temp2,type);
cobj temp3;
cobj temp4;
exchange(temp3,temp4,temp1,temp2,type);
vstream(pointers[0][j],temp3);
vstream(pointers[1][j],temp4);
}
t2=usecond();
return t2-t1;
}
//////////////////////////////////////////////////////

19
lib/simd/Grid_avx.h
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@ -474,16 +474,31 @@ namespace Optimization {
struct Exchange{
// 3210 ordering
static inline void Exchange0(__m256 &out1,__m256 &out2,__m256 in1,__m256 in2){
//Invertible
//AB CD -> AC BD
//AC BD -> AB CD
out1= _mm256_permute2f128_ps(in1,in2,0x20);
out2= _mm256_permute2f128_ps(in1,in2,0x31);
};
static inline void Exchange1(__m256 &out1,__m256 &out2,__m256 in1,__m256 in2){
//Invertible
// ABCD EFGH ->ABEF CDGH
// ABEF CDGH ->ABCD EFGH
out1= _mm256_shuffle_ps(in1,in2,_MM_SELECT_FOUR_FOUR(1,0,1,0));
out2= _mm256_shuffle_ps(in1,in2,_MM_SELECT_FOUR_FOUR(3,2,3,2));
};
static inline void Exchange2(__m256 &out1,__m256 &out2,__m256 in1,__m256 in2){
out1= _mm256_shuffle_ps(in1,in2,_MM_SELECT_FOUR_FOUR(2,0,2,0));
out2= _mm256_shuffle_ps(in1,in2,_MM_SELECT_FOUR_FOUR(3,1,3,1));
// Invertible ?
// ABCD EFGH -> ACEG BDFH
// ACEG BDFH -> AEBF CGDH
// out1= _mm256_shuffle_ps(in1,in2,_MM_SELECT_FOUR_FOUR(2,0,2,0));
// out2= _mm256_shuffle_ps(in1,in2,_MM_SELECT_FOUR_FOUR(3,1,3,1));
// Bollocks; need
// AECG BFDH -> ABCD EFGH
out1= _mm256_shuffle_ps(in1,in2,_MM_SELECT_FOUR_FOUR(2,0,2,0)); /*ACEG*/
out2= _mm256_shuffle_ps(in1,in2,_MM_SELECT_FOUR_FOUR(3,1,3,1)); /*BDFH*/
out1= _mm256_shuffle_ps(out1,out1,_MM_SELECT_FOUR_FOUR(3,1,2,0)); /*AECG*/
out2= _mm256_shuffle_ps(out2,out2,_MM_SELECT_FOUR_FOUR(3,1,2,0)); /*AECG*/
};
static inline void Exchange3(__m256 &out1,__m256 &out2,__m256 in1,__m256 in2){
assert(0);

6
tests/Test_simd.cc
View File

@ -419,8 +419,10 @@ void ExchangeTester(const functor &func)
assert(found==1);
}
// for(int i=0;i<Nsimd;i++){
// std::cout << " i "<< i<<" test1"<<test1[i]<<" "<<input1[i]<<std::endl;
for(int i=0;i<Nsimd;i++){
assert(test1[i]==input1[i]);
assert(test2[i]==input2[i]);
}// std::cout << " i "<< i<<" test1"<<test1[i]<<" "<<input1[i]<<std::endl;
// std::cout << " i "<< i<<" test2"<<test2[i]<<" "<<input2[i]<<std::endl;
// }
}