W dniu 2013-11-04 18:40, Pesce, Andy pisze:
I have a question about the timers in the HMC and the CLOCKxx member. I have a
single z/10 CPC with an HMC.
I have 3 different LPARS running. I know I can configure the HMC to stay in
sync with an NTP server. I do not
however have a "Sysplex Timer". So correct me if I am wrong. Since I don't
have a SYSPLEX timer, I cannot use
the ETRMODE, ETRZONE, and ETRDELTA. But I can use the STPMODE, STPZONE and
TIMEDELTA? Now am I
correct in stating that these are only done at IPL time of the LPAR? Or does
it automatically keep the time
up to date if it gets out of sync with the TIMEDELTA.
Also if it is only available at IPL time, then I should be able to write an
Assembler program to go get the
time from the HMC and do a "SET CLOCK" command. Any help would be
appreciated. Had a little fiasco
on Sun. morning! !
1. Sysplex Timer is history nowadays. AFAIK z10 was the last machine
generation able to connect to the Timer.
2. Nowadays there is STP, it's available in in EC12, z196, z10, z9 (not
sure about z990), but it's paid option.
3. In order to use time "from HMC", automatic daylight avings
adjustments, external NTP server one has to enable STP (still paid).
4. STP* statements in CLOCKxx when STP is unavailable ends with WTOR.
--
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Lodz, Poland
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