Date: Sun, 1 Oct 2000 20:36:43 +0200 (CEST) From: "O. Hartmann" <ohartman@ipamzlx.physik.uni-mainz.de> To: freebsd-stable@freebsd.org Cc: freebsd-emulation@freebsd.org Subject: Fortran 90/HPF on FreeBSD 4.x Message-ID: <Pine.BSF.4.21.0010011928240.22112-100000@ipamzlx.physik.uni-mainz.de>
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Dear Sirs. I need help! I'm looking for a Fortran 90 compiler with SMP/parallel capabilities, running under FreeBSD 4.1. I looked around for some compilers and I found these: FreeBSD nativ: - NAG Fortran F90 (www.nag.co.uk) - g77 Fotran 77 (GNU Fortran) Linux nativ: - PGI Compiler Suite (includes F77/F90/HPF/C/C++), MP capable over OpenMP (www.pgroup.com) - Lahey/Fujitsu F95 for Linux Express V5.5 (www.lahey.com) -VAST/F90 (www.psrv.com). NAG offers also compilers for Linux and you can get a free download of theire compiler suits, but for FreeBSD, I would have to obtain a 20 British Pound fee, Linux is completely free. So, first I tried to install Lahey's F95. I ran into trouble because of Lahey's glibc-detection routine, it showed me that my FBSD-Linux emulation uses glibc, not glibc2.1 so the compiler was installed with the wrong libraries and this happened while their were some updates in the FBSD code on which I accused the compiler malfunctions. Well, to come alongside the problem, I tried now to compile some software and Lahey/Fujitsu works well on F77 code (but I only have one testprogram at the moment). Another project compiled well, but the nativ f95 code has some syntax errors, which are NOT shown by the PC edition (division by zero, WinNT version does not stop there :-)). Well, because one of our new oncoming scientists is highly involved by meterological, environmental research, radiation-research, he uses a lot of code which has been developed on PGI's compiler suite and he told me, that a lot of the stuff needs to run on PGI compilers. Well, for that, I got a copy of their Linux distribution on September, 30th and installed it. Version 3.1-1 compiled well and our scatter function test suite (F77) was compiled well and I got an executable binary. The other software with the obscure division by zero error (mentioned above) was compiled well also, but the executable drops a core after starting. Yesterday evening and today I visited Portland again and got a copy of their new compiler R 3.2-2. I made the same installation, took some modifications in linux86rc file to make it compiling - and it compiles. But the result is always dumping a core, also the F77-compatible source which has been success= fuly compiled with the prior version. I tried to downgrade again, but Portland Group cleaned up their downloads and I can only obtain R 3.1-2 and -3 of the compiler suite. NAG compiler, Linux version, shows a lot of error messages on the f77 standard code and I'm not the professional to clean it up or apply the right tricky compilation option. Some collegues tried it, too, with no success. i do not want me wasting money on a "free" copy of their FreeBSD nativ compiler because it seems not realitic that their suite is to be used here at our department. So I have a focus on Lahey/Fujitsu F95 and especially PGI's compiler suite, especially last one is prefereable because of the MP capabilities. Unfortunately the newest version is not willing to run under FreeBSD 4.1.1-STABLE. So far on my experiences. Waht I need, really need, are some little performance hungry f90 native applications, coded as nativ f90 applications without any tricks or special library needs (vendor specific) to test and stress Lahey or PGI compilers and to proof, whether they produce real code or a heap of bit-trash (sorry for that). --> Is there anybody who's testing Portland Group's compiler on FreeBSD's Linux emulation? --> Who knows some places where I can download some testsuits of simple f90/hpf/f95 code to stress the compiler? Please not any kind special applications with special needs of applied libraries ... --> For the lucky case, Portland Group's compiler is willing to work under some circumstances under FreeBSD, where to find some parallelizing applications for testing purposes? Another, maybe crucial question is: how reliable, fast and scalable is Linux in high performance computing using OpenMP or PVM (clustering) in comparison to FreeBSD? FreeBSD seems not to be very wide spread in numerical application's research using Fortran, I guess (unlike the ancestors using BSD 4.2 or similar, like Ultrix machine or SunOS). If anybody has any hint, tip or trick in solving my problems to get the PGI running under FreeBSd, please email me. And: I need essential help in saving my FreeBSD infrastructure, it should not be replaced by Linux only due the lack of suitable high performance Fotran compilers. And, last but not least: Are there any benchmark comparisons between Linux and FreeBSD? I need some recent tests, especially how fast is Linux in doing SMP and FreeBSD/SMP. Last week I had a discussion with some scientists of our computing center and they told me something about Solaris vs. Linux regarding SMP. I was told that Linux was faster if the number of CPUs is not higher than 4 pieces, means: Linux must be really fast because Solaris is said to be a very fast and well scaling SMP OS?! And FreeBSD? I have no datasheets, so I can not decide anyway ... - MfG O. Hartmann ------------------------------------------------------------------- ohartman@ipamzlx.physik.uni-mainz.de Klimadatenserver-Abteilung des IPA IT Netz- und Systembetreuung Johannes Gutenberg-Universitaet Mainz Becherweg 21 D-55099 Mainz BRD/Germany Tel: +496131/3924662 FAX: +496131/3923235 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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