int rank = comm_-> rank();
MPI_Offset min_offset = file_->tell();
MPI_Offset max_offset = (min_offset + count * datatype->size());//cheating, as we don't care about exact data location, we can skip extent
- MPI_Offset* min_offsets = xbt_new(MPI_Offset, size);
- MPI_Offset* max_offsets = xbt_new(MPI_Offset, size);
+ MPI_Offset* min_offsets = new MPI_Offset[size];
+ MPI_Offset* max_offsets = new MPI_Offset[size];
simgrid::smpi::Colls::allgather(&min_offset, 1, MPI_OFFSET, min_offsets, 1, MPI_OFFSET, comm_);
simgrid::smpi::Colls::allgather(&max_offset, 1, MPI_OFFSET, max_offsets, 1, MPI_OFFSET, comm_);
MPI_Offset min=min_offset;
XBT_CDEBUG(smpi_pmpi, "my offsets to read : %lld:%lld, global min and max %lld:%lld", min_offset, max_offset, min, max);
if(empty==1){
+ delete[] min_offsets;
+ delete[] max_offsets;
status->count=0;
return MPI_SUCCESS;
}
MPI_Offset total = max-min;
if(total==tot && (datatype->flags() & DT_FLAG_CONTIGUOUS)){
+ delete[] min_offsets;
+ delete[] max_offsets;
//contiguous. Just have each proc perform its read
status->count=count * datatype->size();
return T(this,buf,count,datatype, status);
MPI_Offset my_chunk_start=(max-min+1)/size*rank;
MPI_Offset my_chunk_end=((max-min+1)/size*(rank+1));
XBT_CDEBUG(smpi_pmpi, "my chunks to read : %lld:%lld", my_chunk_start, my_chunk_end);
- int* send_sizes = xbt_new0(int, size);
- int* recv_sizes = xbt_new(int, size);
- int* send_disps = xbt_new(int, size);
- int* recv_disps = xbt_new(int, size);
+ int* send_sizes = new int[size];
+ int* recv_sizes = new int[size];
+ int* send_disps = new int[size];
+ int* recv_disps = new int[size];
int total_sent=0;
for(int i=0;i<size;i++){
+ send_sizes[i]=0;
+ send_disps[i]=0;//cheat to avoid issues when send>recv as we use recv buffer
if((my_chunk_start>=min_offsets[i] && my_chunk_start < max_offsets[i])||
((my_chunk_end<=max_offsets[i]) && my_chunk_end> min_offsets[i])){
send_sizes[i]=(std::min(max_offsets[i]-1, my_chunk_end-1)-std::max(min_offsets[i], my_chunk_start));
//store min and max offest to actually read
min_offset=std::min(min_offset, min_offsets[i]);
- send_disps[i]=0;//send_sizes[i]; cheat to avoid issues when send>recv as we use recv buffer
total_sent+=send_sizes[i];
XBT_CDEBUG(smpi_pmpi, "will have to send %d bytes to %d", send_sizes[i], i);
}
buf, recv_sizes, recv_disps, MPI_BYTE, comm_);
status->count=count * datatype->size();
smpi_free_tmp_buffer(sendbuf);
- xbt_free(send_sizes);
- xbt_free(recv_sizes);
- xbt_free(send_disps);
- xbt_free(recv_disps);
- xbt_free(min_offsets);
- xbt_free(max_offsets);
+ delete[] send_sizes;
+ delete[] recv_sizes;
+ delete[] send_disps;
+ delete[] recv_disps;
+ delete[] min_offsets;
+ delete[] max_offsets;
return MPI_SUCCESS;
}
}
