Does this even build with the cray compiler?
int main(int argc, char *argv[])
{
return __builtin_ffsl((unsigned long) argc);
}
Le 05/01/2017 14:56, Xavier LACOSTE a écrit :
>
> Indeed,
>
>
>
> If I had a #undef __GNUC__ in misc.h the compilation finished (I still
> have the link complaining about recompiling with –fPIE and linking
> with –pie, but I should be able to handle that)
>
> I tried all available cray cc (2.2.1 and 2.5.6) and they behave the same.
>
> I’ll see how to report bug to Cray and may ask for a new compiler
> installation.
>
>
>
> XL.
>
>
>
> *De :*Brice Goglin [mailto:brice.gog...@inria.fr]
> *Envoyé :* jeudi 5 janvier 2017 14:39
> *À :* Xavier LACOSTE
> *Cc :* Hardware locality user list
> *Objet :* Re: [hwloc-users] Building hwloc on Cray with
> /opt/cray/craype/2.5.4/bin/cc
>
>
>
> Ah ok now I remember we've seen the same issue 4 years ago.
> https://mail-archive.com/hwloc-users@lists.open-mpi.org/msg00816.html
> Basically the Cray compiler claimed to be GCC compatible it was not.
> But that users explicitly requested the cray compiler to behave as GNU
> with "-h gnu". Did you pass any option to the compiler?
>
> We could workaround the issue by not using __builtin_ffsl() when we
> detect the cray compiler, but that would be overkill since earlier
> versions worked fine. Do you have ways to report bugs to Cray? Or
> install a different cray compiler version?
>
> Brice
>
>
> Le 05/01/2017 14:25, Xavier LACOSTE a écrit :
>
> It seems that the __GNU__ is defined so I don’t get into the
> HWLOC_HAVE_FFSL section.
>
>
>
> Maybe because I already configured once with gcc before ? Do I
> have to do anything more than make clean an reconfigure to change
> compiler ?
>
>
>
> *De :*Brice Goglin [mailto:brice.gog...@inria.fr]
> *Envoyé :* jeudi 5 janvier 2017 14:18
> *À :* Xavier LACOSTE
> *Cc :* Hardware locality user list
> *Objet :* Re: [hwloc-users] Building hwloc on Cray with
> /opt/cray/craype/2.5.4/bin/cc
>
>
>
> configure seems to have detected ffsl() properly, but it looks
> like our ffsl() redefinition gets enabled anyway, and conflicts
> with the system-wide one.
>
> Does it help if you comment out line #66 of include/private/misc.h ?
> extern int ffsl(long) __hwloc_attribute_const;
>
> Brice
>
>
>
> Le 05/01/2017 13:52, Xavier LACOSTE a écrit :
>
> Hello Brice,
>
>
>
> I attached the files.
>
>
>
> I could build hwloc and link with it using the default (gcc)
> compiler.
>
> But If I use gcc to build the library I can link with
> gcc/icc/pgcc but not with cc from cray.
>
>
>
> Thanks,
>
>
>
> XL.
>
>
>
>
>
> *De :*Brice Goglin [mailto:brice.gog...@inria.fr]
> *Envoyé :* jeudi 5 janvier 2017 12:50
> *À :* Xavier LACOSTE
> *Cc :* Hardware locality user list
> *Objet :* Re: [hwloc-users] Building hwloc on Cray with
> /opt/cray/craype/2.5.4/bin/cc
>
>
>
> Hello Xavier
> Can you send the /usr/include/string.h from that cray machine,
> your config.log and include/private/autogen/config.h from the
> hwloc build directory?
> Do you get the same error if building from the default
> compiler instead of /opt/cray/craype/2.5.4/bin/cc?
> thanks
> Brice
>
>
>
> Le 05/01/2017 12:31, Xavier LACOSTE a écrit :
>
>
>
> Hello,
>
>
>
> I’m trying to build hwloc on a cray machine with cray
> compiler :/opt/cray/craype/2.5.4/bin/cc
>
>
>
> I get the following error :
>
> $> CC=cc ./configure --prefix=$PWD-cc-install
>
> $> make
>
> Making all in src
>
> make[1]: Entering directory
> `/home/j0306818/xavier/hwloc-1.11.5/src'
>
> CC bitmap.lo
>
> CC-147 craycc: ERROR
>
> Declaration is incompatible with "int ffsl(long)"
> (declared at line 526 of
>
> "/usr/include/string.h").
>
>
>
>
>
> Total errors detected in bitmap.c: 1
>
> make[1]: *** [bitmap.lo] Error 1
>
> make[1]: Leaving directory
> `/home/j0306818/xavier/hwloc-1.11.5/src'
>
> make: *** [all-recursive] Error 1
>
>
>
> Do you have any idea of what I am doing wrong ?
>
> Is this a known issue ?
>
>
>
> Another secondary question :
>
>
>
> Hwloc builds correctly with gcc compiler but the CPUVendor
> field is not available using this code :
>
>
>
> #include <hwloc.h>
>
>
>
> int main(int argc, char *argv[])
>
> {
>
> hwloc_topology_t topo;
>
> hwloc_obj_t obj;
>
> int err;
>
> int i;
>
> char obj_str[2048];
>
> char attr_str[2048];
>
>
>
> /* initialize a topology context */
>
> err = hwloc_topology_init(&topo);
>
> assert(!err);
>
>
>
> /* insert optional topology configuration here */
>
>
>
> /* build the topology created and configured above */
>
> err = hwloc_topology_load(topo);
>
>
>
> /* play with the topology here */
>
> obj = hwloc_get_obj_by_type(topo, HWLOC_OBJ_PACKAGE, 0);
>
> fprintf(stdout, "CPU_Vendor : %s \n",
> hwloc_obj_get_info_by_name(obj,"CPUVendor"));
>
> hwloc_obj_type_snprintf(obj_str, 2048, obj, 1);
>
> hwloc_obj_attr_snprintf(attr_str,2048, obj, " | ", 1);
>
> fprintf(stdout, "%s : %s\n", obj_str, attr_str);
>
>
>
> /* terminate this topology context */
>
> hwloc_topology_destroy(topo);
>
>
>
> return 0;
>
> }
>
>
>
> Am I using the correct code to retrieve the CPUVendor ? As
> far as I see the topology is correctly detected anyway.
>
>
>
> Regards,
>
>
>
> XL.
>
>
>
>
>
>
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>
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>
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>
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>
>
>
>
>
>
>
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