...
I had forgotten, but you are correct Amedeo. My results (for mpi-psana analysis) are here.
It looks like an early test suggested HT helped, but when I tried to reproduce it later on I couldn’t, so we disabled it. Many years ago I also benchmarked some quantum-chemistry code with/without HT and it didn’t help there either
...
| language | text |
|---|---|
| title | March 2015 email (LCLS-I) |
| collapse | true |
...
Chris Ford writes:
Sent: Thursday, March 26, 2015 4:45 PMTo: pcds-daq-l
...
Subject:
...
SXR:
...
hyperthreading
...
enabled
...
on
...
daq-sxr-cam02
...
and
...
'03?
...
Folks,
...
While
...
testing
...
the
...
Andor
...
camera
...
I
...
learned
...
that
...
some
...
DAQ
...
nodes
...
were
...
known
...
to
...
work
...
better
...
than
...
others
...
for
...
this
...
USB-based
...
device.
...
Tomy
...
writes,
...
"One
...
example
...
I
...
remember
...
is
...
that
...
daq-sxr-cam01
...
was
...
okay
...
to
...
run
...
for
...
hours,
...
but
...
daq-sxr-cam{02,03}
...
would
...
hang
...
after
...
some
...
minutes."
...
Today
...
I
...
took
...
a
...
closer
...
look,
...
and
...
I
...
noticed
...
that
...
hyperthreading
...
seems
...
to
...
be
...
enabled
...
on
...
daq-sxr-cam02
...
and
...
'03,
...
where
...
Andor
...
fails.
...
Hyperthreading
...
seems
...
to
...
be
...
*disabled*
...
on
...
daq-sxr-cam01,
...
where
...
Andor
...
runs
...
well
...
.
...