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Time the face gateher in x-dir more carefully

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paboyle
2016-10-13 22:28:50 +01:00
parent 8b0d171c9a
commit c8079e6621
1 changed files with 63 additions and 3 deletions
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66
lib/Stencil.h
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@@ -70,6 +70,60 @@
namespace Grid {
template<class vobj,class cobj,class compressor> void
Gather_plane_simple_stencil (const Lattice<vobj> &rhs,std::vector<cobj,alignedAllocator<cobj> > &buffer,int dimension,int plane,int cbmask,compressor &compress, int off=0,
double &t_table ,double & t_data )
{
int rd = rhs._grid->_rdimensions[dimension];
if ( !rhs._grid->CheckerBoarded(dimension) ) {
cbmask = 0x3;
}
int so = plane*rhs._grid->_ostride[dimension]; // base offset for start of plane
int e1=rhs._grid->_slice_nblock[dimension];
int e2=rhs._grid->_slice_block[dimension];
t_table = 0.0;
t_data = 0.0;
int stride=rhs._grid->_slice_stride[dimension];
if ( cbmask == 0x3 ) {
t_data-=usecond();
PARALLEL_NESTED_LOOP2
for(int n=0;n<e1;n++){
for(int b=0;b<e2;b++){
int o = n*stride;
int bo = n*e2;
buffer[off+bo+b]=compress(rhs._odata[so+o+b]);
}
}
t_data+=usecond();
} else {
int bo=0;
t_table-=usecond();
std::vector<std::pair<int,int> > table;
for(int n=0;n<e1;n++){
for(int b=0;b<e2;b++){
int o = n*stride;
int ocb=1<<rhs._grid->CheckerBoardFromOindexTable(o+b);
if ( ocb &cbmask ) {
table.push_back(std::pair<int,int> (bo++,o+b));
}
}
}
t_table+=usecond();
t_data-=usecond();
PARALLEL_FOR_LOOP
for(int i=0;i<table.size();i++){
buffer[off+table[i].first]=compress(rhs._odata[so+table[i].second]);
}
t_data+=usecond();
}
}
struct StencilEntry {
uint64_t _offset;
uint64_t _byte_offset;
@@ -102,8 +156,8 @@
std::vector<Packet> Packets;
#define SEND_IMMEDIATE
#define SERIAL_SENDS
#define SEND_IMMEDIATE
#define SERIAL_SENDS
void AddPacket(void *xmit,void * rcv, Integer to,Integer from,Integer bytes){
#ifdef SEND_IMMEDIATE
@@ -305,6 +359,8 @@
double gathermtime;
double splicetime;
double nosplicetime;
double t_data;
double t_table;
double calls;
void ZeroCounters(void) {
@@ -317,6 +373,8 @@
gathermtime = 0.;
splicetime = 0.;
nosplicetime = 0.;
t_data = 0.0;
t_table= 0.0;
comms_bytes = 0.;
calls = 0.;
};
@@ -336,6 +394,8 @@
PRINTIT(gathermtime);
PRINTIT(splicetime);
PRINTIT(nosplicetime);
PRINTIT(t_table);
PRINTIT(t_data);
}
};
#endif
@@ -783,7 +843,7 @@
int bytes = words * sizeof(cobj);
gathertime-=usecond();
Gather_plane_simple (rhs,u_send_buf,dimension,sx,cbmask,compress,u_comm_offset);
Gather_plane_simple_stencil (rhs,u_send_buf,dimension,sx,cbmask,compress,u_comm_offset,t_table,t_data);
gathertime+=usecond();
int rank = _grid->_processor;