George,
i pushed
https://github.com/open-mpi/ompi/commit/ac16970d21d21f529f1ec01ebe0520843227475b
in order to get the intel compiler work with ompi
Cheers,
Gilles
On 2015/01/16 17:29, Gilles Gouaillardet wrote:
> George,
>
> i was unable to reproduce the hang with icc 14.0.3.174 and greater on a
> RHEL6 like distro.
>
> i was able to reproduce the opal_tree failure and found two possible
> workarounds :
> a) manually compile opal/class/opal_tree.lo *without* the
> -finline-functions flag
> b) update deserialize_add_tree_item and declare curr_delim as volatile
> char * (see the patch below)
>
> this function is recursive, and the compiler could generate some
> incorrect code.
>
> Cheers,
>
> Gilles
>
> diff --git a/opal/class/opal_tree.c b/opal/class/opal_tree.c
> index e8964e0..492e8dc 100644
> --- a/opal/class/opal_tree.c
> +++ b/opal/class/opal_tree.c
> @@ -465,7 +465,7 @@ int opal_tree_serialize(opal_tree_item_t
> *start_item, opal_buffer_t *buffer)
> static int deserialize_add_tree_item(opal_buffer_t *data,
> opal_tree_item_t *parent_item,
> opal_tree_item_deserialize_fn_t
> deserialize,
> - char *curr_delim,
> + volatile char *curr_delim,
> int depth)
> {
> int idx = 1, rc;
>
> On 2015/01/16 8:57, George Bosilca wrote:
>> Today's trunk compiled with icc fails to complete the check on 2 tests:
>> opal_lifo and opal_tree.
>>
>> For opal_tree the output is:
>> OPAL dss:unpack: got type 9 when expecting type 3
>> Failure : failed tree deserialization size compare
>> SUPPORT: OMPI Test failed: opal_tree_t (1 of 12 failed)
>>
>> and opal_lifo gets stuck forever in the single threaded call to thread_test
>> in a 128 bits atomic CAS. Unfortunately I lack the time to dig deep enough
>> to see what is the root cause, but a quick look at the opal_config.h file
>> indicates that our configure detects that __int128 is a supported type when
>> it should not be.
>>
>> George
>>
>> Open MPI git d13c14e configured with --enable-debug
>> icc (ICC) 14.0.0 20130728
>>
>>
>>
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>
>
>
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