PROBLEM: (94760, 94499, 92708, 94330,
          94788) (PATCH ID: OSF540-091)
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This patch, which installs DECthreads V3.20-029, fixes the following problems:
   Applications with a large number of frequently blocking PCS threads 
   may experience a loss of parallelism as unblocked threads are
   queued behind running threads rather than onto idle CPUs.

   With symptoms similar to the above, OpenMP applications may not scale 
   correctly.

   Threaded applications which use libaio, or which directly make changes
   to thread cancelability at runtime may encounter a DECthreads bugcheck
   similar to the following:

        %DECthreads bugcheck (version V3.20-018), terminating execution. 
        % Reason: pthread_cancel: (os/kern) protection failure (2)

   Threaded applications using PCS threads may experience a live hang 
   following topology updates (runon, CPU hotswap, etc). The application 
   will become CPU bound, spinning in the DECthreads library code at 
   the schFindTargetRad() routine.

   Threaded applications using PCS threads may hang following a topology
   update (runon, CPU hotswap, etc).   When all compute resources within
   a RAD are offlined, the DECthreads library may neglect to evacuate
   that RAD in favor of another with available resources.


PROBLEM: (92580, 95333) (PATCH ID: OSF540-275)
********
This patch installs DECthreads V3.20-029c, which contains a fix for a
potential corruption of the floating point registers in a threaded program
running on Tru64 UNIX V5.1b.


PROBLEM: (95280, 95571, 95333) (PATCH ID: OSF540-438)
********
This patch installs DECthreads V3.20-033, which fixes two potential problems
with threaded applications on Tru64 Unix V5.1b:
     1. Potential corruption of a floating point registers
     2. Potential divide by zero SIGFPE in DECthreads schPrioInit() routine