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I have a MPI program like this:
void slave1(int j){
MPI_Status status;
MPI_Recv(&j,1,MPI_INT,0,0,MPI_COMM_WORLD,&status);}

void slave2(int j){
MPI_Status status;...

Hi,
How to wait the slave to be finished first then execute the master?
Can someone give me the specific function? Or the detailed example.
Thanks~

Thanks~

for a in {1..100}
do
awk '{ sum+=$a} END {print sum}' a=$a file1 > file2
done

I know I will get only one number if following the code above, how can I get 100 sum numbers in file2?

I want to split one files (>200000000 lines) into 20000 files, when I use
spilt -l 23360 -d file it shows output file suffixes exhausted, seems the maximum numbers is 100.....how to solve it?

awk '{print $NF}' file | pr -s -t3
Thanks~ This works, but the data file is very large, when try to use this to divide it into 20000 parts, the error shows: width too narrow. What should be the...

Hi, I have a large data file, want to separate it into 100 part and export one specific field as a file; then I want to append each part's column into one file. How to realize that?

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