[Bug fortran/31234] New: Thread-safety of random_number should be documented.

[Bug fortran/31234] New: Thread-safety of random_number should be documented.

[brooks at gcc dot gnu dot org]

As noted in this message:
http://gcc.gnu.org/ml/fortran/2007-03/msg00339.html

This should probably be documented in the manual.


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           Summary: Thread-safety of random_number should be documented.
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Keywords: documentation
          Severity: enhancement
          Priority: P3
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: brooks at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31234

[Bug fortran/31234] Thread-safety of random_number should be documented.

[fxcoudert at gcc dot gnu dot org]

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fxcoudert at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2007-03-17 11:22:44
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31234

[Bug fortran/31234] Thread-safety of random_number should be documented.

[dfranke at gcc dot gnu dot org]

------- Comment #1 from dfranke at gcc dot gnu dot org  2007-03-21 14:11 -------
Brooks, maybe not. 
Thread safety, in the context it was asked for, still needs to be proved.
Having mutexes within the code is fine to save the states from overwriting each
other (it is an unexpected serialisation point, though). Nevertheless, as
RANDOM_NUMBER is expected to give uniformely distributed numbers from 0.0 to
1.0 on a single thread, this needs not to be the case if multiple threads draw
from the same series as currently implemented. 

I'll run some tests as soon as possible and report back to the mailing list.


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dfranke at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dfranke at gcc dot gnu dot
                   |                            |org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31234

[Bug fortran/31234] Thread-safety of random_number should be documented.

[dfranke at gcc dot gnu dot org]

------- Comment #2 from dfranke at gcc dot gnu dot org  2007-03-23 10:05 -------
> I'll run some tests as soon as possible and report back to the mailing list.
See
  http://gcc.gnu.org/ml/fortran/2007-03/msg00440.html


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31234

[Bug fortran/31234] Thread-safety of random_number should be documented.

[dfranke at gcc dot gnu dot org]

------- Comment #3 from dfranke at gcc dot gnu dot org  2007-04-12 19:23 -------
Subject: Bug 31234

Author: dfranke
Date: Thu Apr 12 19:23:03 2007
New Revision: 123760

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=123760
Log:
2007-04-12  Daniel Franke  <franke.daniel@gmail.com>

        PR fortran/31234
        * intrinsic.texi (RANDOM_SEED, RANDOM_NUMBER): New.


Modified:
    trunk/gcc/fortran/ChangeLog
    trunk/gcc/fortran/intrinsic.texi


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31234

[Bug fortran/31234] Thread-safety of random_number should be documented.

[dfranke at gcc dot gnu dot org]

------- Comment #4 from dfranke at gcc dot gnu dot org  2007-04-12 19:27 -------
Subject: Bug 31234

Author: dfranke
Date: Thu Apr 12 19:27:07 2007
New Revision: 123761

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=123761
Log:
2007-04-12  Daniel Franke  <franke.daniel@gmail.com>

        PR fortran/31234
        * intrinsic.texi (RANDOM_SEED, RANDOM_NUMBER): New.


Modified:
    branches/gcc-4_2-branch/gcc/fortran/ChangeLog
    branches/gcc-4_2-branch/gcc/fortran/intrinsic.texi


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31234

[Bug fortran/31234] Thread-safety of random_number should be documented.

[dfranke at gcc dot gnu dot org]

------- Comment #5 from dfranke at gcc dot gnu dot org  2007-04-12 19:28 -------
Documented in trunk and 4.2 branch. Closing.


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dfranke at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.2.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31234