FW: Parallelism check failure

[ray . griffith]

Dear Support Person,

I sent the e-mail below back in July. I have not received any reply or
notification of a solution. I would be grateful if you could let me know
what may be happening with this question.

Thank You

Ray Griffith

BT Computing Partners
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 -----Original Message-----
From:   Griffith,RT,Ray,YEM34 R  
Sent:   27 July 2001 09:12
To:     'address@hidden'
Subject:        Parallelism check failure

Dear Support Person,

I have tried to run the "./make check" procedure and I always get a failure
on the parallelism test. The error is given as "Clock Skew". The
configuration we have is such that the check is being run on an NFS mounted
files system and we suspect that there is very slight time difference
between the time on the host and the time on the filestore. From what we can
see the difference is within acceptable limits. The host is a Sun Ultra2 and
the filestore is be Network Appliance. Both the host and the filestore run
SNTP to synchronise clocks from the same source. On odd occasions you can
run the check and it passes but the success rate is less than 1 in 20 or
more.

I have attached the relevant details and would be grateful for you comments
on effects this issue may have on a "make" and if necessary resolve it. I
can also say that if the test is run from local disk on the same system it
passes every time. Given there is a move to put store centrally either in a
SAN or NAS type environment this is likely to become more of an issue
especially if it causes "makes" to fail. (No proof of failures yet :-) ).
The test does appear to complete correctly - it is just the clock skew that
causes it to fail.

 <<gmake_parallel.tar.Z>> 
Thank you for your time.

Ray Griffith

BT Computing Partners
Tel:    +44 (0)1344 822822
Mob:    +44 (0)7801 977354
Fax:    +44 (0)1344 822812
E-mail: address@hidden <mailto:address@hidden> 
Web:    http://www.bt.com/ <http://www.bt.com/> 

British Telecommunications plc
Registered office: 81 Newgate Street London EC1A 7AJ
Registered in England no. 1800000.

This electronic message contains information from British Telecommunications
plc which may be privileged or confidential. The information is intended to
be for the use of the individual(s) or entity named above. If you are not
the intended recipient be aware that any disclosure, copying, distribution
or use of the contents of this information is prohibited. If you have
received this electronic message in error, please notify us by telephone or
email (to the numbers or address above) immediately.

gmake_parallel.tar.Z
Description: Binary data