[Beowulf] ifort and gfortran
Dear All, This is not directly relate to parallel computing but I may be able to get your skills/knowledge. We have developed a fortran code and we can compile it with bot intel-fortran and gfortran without any error message. When we run it, the code runs when intel-fortran ifort was used for the compilation. When gfortran is used, then we get "segmentation fault" in the middle/during the parameter setting stage of the computation. I would be grateful if you have any idea on how to treat this problem. Thank you very much Fumie ___ Beowulf mailing list, Beowulf@beowulf.org To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
[Beowulf] progress on ifort and gfortran issue
Dear Mark, Dmitri, Xavier, Dave, and Tom, thank you very much for your suggestions. First of all, I tried the compilation with -fbounds-check option and I did not get any error message. When I checked the site http://gcc.gnu.org/wiki/GFortran our gfortran which shows: fu...@e3sfc32:~/ngs-fdcn-code> gfortran --version GNU Fortran (GCC) 4.4.0 20081011 (experimental) [trunk revision 141054] Copyright (C) 2008 Free Software Foundation, Inc. seems to be the latest now. There is no file to read in as this is the very primitive code for the new algorithm test, not the production code(=reference code). We are going to try to learn gdb so that we can understand where the segfault comes from. I will keep you updated. Thank you very much for your help Best wishes, Fumie ___ Beowulf mailing list, Beowulf@beowulf.org To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
[Beowulf] Re: progress on ifort and gfortran issue
Dear All, Finally this issue is solved by one of my students, Philip Clapham . Assume we have an array which is declared as an allocatable array. When this array is used without explicit allocation of memory by mistake, ifort and gfortran implicitly allocate the memory in a different way. ifort gives the size of 0 and gfortran gives the size of 1 This was very difficult to track using the debuggers and we actually put the manual check line by line... Anyway thank you very much indeed for all of your help on this issue. Have a lovely and long Easter weekend :-) Best wishes, Fumie f.cos...@cs.man.ac.uk wrote: > Dear Mark, Dmitri, Xavier, Dave, and Tom, > thank you very much for your suggestions. > First of all, I tried the compilation > with -fbounds-check option and I did not get any error > message. > When I checked the site http://gcc.gnu.org/wiki/GFortran > our gfortran which shows: > fu...@e3sfc32:~/ngs-fdcn-code> gfortran --version > GNU Fortran (GCC) 4.4.0 20081011 (experimental) [trunk revision 141054] > Copyright (C) 2008 Free Software Foundation, Inc. > seems to be the latest now. > > There is no file to read in as this is the > very primitive code for the new algorithm test, > not the production code(=reference code). > > We are going to try to learn gdb so that > we can understand where the segfault comes from. > > I will keep you updated. > Thank you very much for your help > Best wishes, Fumie > ___ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
[Beowulf] PhD position: AXA Fund Competition
Dear All, so sorry that this is nothing to do with the technical question/input. Please ignore this email if you are not interested in PhD funding. If you would like to get a PhD funding in the area of computation in electromagnetics for bioengineering, please contact me ( fumie.cos...@gmail.com ) as soon as possible as the deadline is very tight. The research content is at http://www.cs.man.ac.uk/~fumie/tmp/AXA.pdf and our internal(U of Manchester) Guidance note on this funding is at http://www.cs.man.ac.uk/~fumie/tmp/AXAGuidance.doc and application instruction is http://www.cs.man.ac.uk/~fumie/tmp/AXAOperandi.pdf You have to have a first class (i.e. high mark) master degree and EU citizen. Having a strong experience in programming (such as Fortran 90) under Linux/Unix operating system with good mathematics knowledge and good shell-scripting skills is highly recommended. Best wishes, Fumie, University of Manchester, U.K. ___ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
