[Condor-users] Problem: writing to shared drive on XP

[Haksun.Li@xxxxxxx]

Dear Condor gurus,

I have just successfully installed Condor on my 2 XP machines. I am able
to distribute some very simple programs using condor. Unfortunatley, it
seems that condor has difficulty executing programs that write to shared
drive.

I wrote this simple test program, which prints out the hostname to a
file.


#include <stdio.h>
#include <Winsock2.h>

void print(char* arg) {
	WORD wVersionRequested;
	WSADATA wsaData;
	wVersionRequested = MAKEWORD( 2, 2 ); 
	WSAStartup( wVersionRequested, &wsaData );

	char hostname[512];
	int err = gethostname(hostname, 512);
	err = WSAGetLastError();

	char output[512];
	sprintf(output, "\\\\SHAREDDRIVE\\Public\\output_%s_%s.txt",
hostname, arg); //don't work
	//sprintf(output, "C:\\Public\\output_%s_%s.txt", hostname,
arg); //OK
	//sprintf(output, "output_%s_%s.txt", hostname, arg); //OK

	FILE* fp = fopen(output, "w");
	fprintf(fp, "hostname: %s\n", hostname);
	fclose(fp);
}

int
main(int argc, char** argv) {
	print(argv[1]);
}


Among the 3 sprintf statements, the last 2 ones work wihtout problem
(writing to a local drive). However, when I want to write to a shared
drive named SHAREDDRIVE\Public (SHAREDDRIVE is the machine name in a
LAN), it fails very often.

To be exact, here is my configuration file:


Executable = testCondor2.exe
Universe = vanilla
Log= testCondor2.log
error = testCondor2.error
output = testCondor2.output

Arguments = 1
Queue 

Arguments = 2
Queue 

Arguments = 3
Queue 

Arguments = 4
Queue 

Arguments = 5
Queue 

Arguments = 6
Queue 

Arguments = 7
Queue 

Arguments = 8
Queue 

Arguments = 9
Queue 

Arguments = 10
Queue 


It is able to produce output file for the first 6 jobs. Then last 4
expected output files are missing. I got an error message poped up
saying assertion failed for fprintf. (My executable is compiled in debug
mode with MSVC.net 2003. So, a debug diaglox box pops up on error.) By
the way, if I limit the number of tasks to 6 in the config file, condor
always succeeds.

In a nut shell, my little task writing to a shared drive works some
times but not always when using condor. (When I ran the task outside
condor, there is no problem at all, regardless of how many times I ran
it.) Incidentally, the error file from condor reports nothing.


My configuration:

EUP WinXP on Intel Xeon CPU 2.8GHz. 3GB of RAM. XP professional version
2002, SP 1.
I have enabled "Full Control" for "Everyone" for the shared
drive/folder.
I am running Condor installed from condor-6.6.10-winnt50-x86.exe.

Can someone shed some light for a poor soul please?

Thanks very much,
Haksun


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