#Simply fortran no source detected install#
#Simply fortran no source detected update#

I'm trying to build with the Oracle Solaris Studio (Sun) compilers on Linux, but Open MPI.

I'm trying to build with the IBM compilers, but Open MPIД®ventually fails to compile.

When I build with the Intel compiler suite, linking user MPIДЄpplications with the wrapper compilers results in warning messages.

I'm trying to build with the Intel compilers, but Open MPIД®ventually fails to compile with really long error messages.

Can I pass specific flags to the compilers / linker used to build Open MPI?.

Open MPI seems to default to building with the GNU compiler set.

Open MPI configured ok, but I get 'Makefile:602: *** missing separator' kinds of errors when building.

Configure issues warnings about sed and unterminated.

When I run 'make', it looks very much like the build system is going into a loop.

How do I build Open MPI as a static library?.

Do I need any special tools to build Open MPI?.

Are VPATH and/or parallel builds supported?.

How do I build an optimized version of Open MPI?.

Can I disable Open MPI's use of plugins?.

#Simply fortran no source detected install#

Should I install a new version of Open MPI over an old version?.Open MPI was pre-installed on my machine should I overwrite it with a new version?.What are the default build options for Open MPI?.Wow - I see a lot of errors during configure.Using ifort with debugging options, the problems was detected at runtime! i, j, k= 3 3 3ДЇorrtl: severe (193): Run-Time Check Failure.| Home | Support | FAQ | all just the FAQ But without the save attribute k is undefined, so the using its value is illegal.Д¬ompiling the program with gfortran, I found that k retained its value anyway: i, j, k= 3 3 3Д¬ompiling the program with ifort and aggressive optimization options, k lost its value: i, j, k= 3 3 3 Local variable k of the subroutine is intentionally misused - in this program it is initialized in the first call since control is TRUE, but on the second call control is FALSE, so k is not redefined.

#Simply fortran no source detected update#

LATER EDIT: update with a code example that shows incorrect usage of a local variable that should have the save attribute but doesn't: module subs

Many compilers have an option to use the non-standard behavior and 'save' all local variables. Some old programs were written relying on this non-standard behavior - these programs will fail on the newer compilers. This is different from the behavior of many FORTRAN 77 compilers, some of which retained the values of all local variables, even though this wasn't required by the language standard.

So if you attempt to use 'var' on an later call before redefining it in that call, the value is undefined and probably won't be the value calculated on a previous invocation of the procedure. In contrast to the module case, with modern compilers, without the save attribute or initialization-on-a-declaration, it is normal for local variables of procedures to lose their values across invocations. Though actually in Fortran >=90 one can omit the 'save' because the initialization in the declaration implies 'save'. In this code fragment, 'counter' will report the number of invocations of subroutine x. 'save' is also important in procedures, to store 'state' across invocations of the subroutine or function (as written by - 'first invocation' initializations, counters, etc. But many compilers don't do this for module variables - the variables probably retain their values - it isn't worth the effort for the compiler to figure out whether a module remains in scope or not and probably module variables are treated as global variables - but don't rely on that! To be safe, either use 'save' or 'use' the module from the main program so that it never goes out of scope. 'Undefined' means that you are not allowed to rely on the variable having the previous value if you again use the module - it might have the previous value when you re-access the module, or it might not - there is no guarantee. In principal when a module goes out-of-scope, the variables of that module become undefined - unless they are declared with the SAVE attribute, or a SAVE statement is used.