[parsec-users] Segmentation fault for Dedup (uncompress)

Christian Bienia cbienia at CS.Princeton.EDU
Tue Aug 11 15:23:18 EDT 2009

Hi Rafa,


How do you invoke the program? It works fine for me. Here's how you're
supposed to decode a compressed file:


        dedup -u -f -i archive.dat.ddp -o archive.dat


It's possible that you don't call the program properly and we didn't catch
an undefined state. Could you let me know whether the above line works for


- Chris



From: parsec-users-bounces at lists.cs.princeton.edu
[mailto:parsec-users-bounces at lists.cs.princeton.edu] On Behalf Of Rafael
Sent: Monday, August 10, 2009 6:29 AM
To: parsec-users at lists.cs.princeton.edu
Subject: [parsec-users] Segmentation fault for Dedup (uncompress)




I've been using Parsec 1.0 and 2.0 for a while. I was testing the uncompress
option for Dedup (-u) so as to validate that uncompressing a file gives you
the original one. However I found that calling dedup with -u produces a
segmentation fault. I've tested it in two platforms (intel Xeon, and Itanium
2), Linux/x86_64 and Linux/Itanium, with SLES 9 and 10, serial and parallel
(2 threads), with simtest, simdev and simlarge, gcc 4.1 and 4.2 and with
parsec 1.0 and 2.0.


Using gdb I found that segmentation fault arises when calling "uncompress"
function (from libz), at function Decompress in file decoder.c. Does someone
notice that before. Any help will be much appreciated.






Dr. Rafael Asenjo Plaza
Dept. Arquitectura de Computadores      

Complejo Tecnologico Campus de Teatinos


Tel: +34 95 213 27 91
Fax: +34 95 213 27 90        



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