Re: [HTCondor-users] eval() not working?

["Sarmiento, Evan" <esarmien@xxxxxxxxxxxxx>]

Hey John,

That's great **but** I run a production environment at Harvard and
we're unable to deploy 8.3.0, anyway I'm just curious why eval() isn't
working here cause it's been causing me so much grief, mostly personal
irritating grief, as if an ant has crawled up a hole in my jeans that
I refused to patch out of sheer laziness.

Anyway I look forward to either CGROUPS being integrated into machine
classads or using 8.3.0 to do this when it becomes stable.

Best,
Evan


On Thu, Aug 28, 2014 at 1:06 PM, John (TJ) Knoeller <johnkn@xxxxxxxxxxx> wrote:
> For what it's worth.  HTCondor 8.3.0 allows startd cron scripts to publish a
> different value into each slot
> which would make the use of eval in this context unnecessary.
>
> -tj
>
>
> On 8/28/2014 8:36 AM, Sarmiento, Evan wrote:
>>
>> Hi,
>>
>> I'm running Condor 8.0.7--
>>
>> I made a custom set of Machine ClassAds which display CGROUP
>> parameters per slot, configuration below:
>>
>> #
>> # CGROUP Machine ClassAds
>> #
>>
>> STARTD_CRON_AUTOPUBLISH = If_Changed
>>
>> STARTD_CRON_JOBLIST =
>>
>> STARTD_CRON_JOBLIST = $(CRON_JOBLIST) cgroup
>>
>> STARTD_CRON_cgroup_PREFIX =
>> STARTD_CRON_cgroup_EXECUTABLE = /usr/local/HMDC/bin/condor_slot_cgroups
>> STARTD_CRON_cgroup_PERIOD = 5s
>> STARTD_CRON_cgroup_MODE = WaitForExit
>> STARTD_CRON_cgroup_RECONFIG = true
>> STARTD_CRON_cgroup_SLOTS =
>> STARTD_CRON_cgroup_ARGS = $(BASE_CGROUP)
>>
>> #
>> # STARTD ATTRS
>> #
>> #
>>
>> DYNAMIC_SLOT_ID = \
>>    splitSlotName(Name)[0]
>>
>> MEMORY_USAGE_IN_BYTES = \
>>   eval( strcat( toUpper(DYNAMIC_SLOT_ID), "_cgroup_memory_usage_in_bytes"
>> ) )
>>
>>
>> SLOTD_SLOT_ATTRS = $(STARTD_SLOT_ATTRS), MEMORY_USAGE_IN_BYTES,
>> CGROUP_MEMORY_USAGE_IN_BYTES, DYNAMIC_SLOT_ID
>> STARTD_ATTRS = $(STARTD_ATTRS), MEMORY_USAGE_IN_BYTES,
>> CGROUP_MEMORY_USAGE_IN_BYTES, DYNAMIC_SLOT_ID
>>
>> #
>> # private IP
>> #
>> NETWORK_INTERFACE = <%= @hmdc_node_listen %>
>>
>> #
>> # We're a head node that also runs jobs
>> #
>> DAEMON_LIST = $(HMDC_COMPUTE_DAEMON_LIST)
>>
>> However, when I login to my collector, eval() doesn't seem to work--
>> check this out:
>>
>> [root@dev-cod6-head tmp]# condor_status -autoformat Dynamic_Slot_Id
>>
>> slot1
>>
>> slot1
>>
>> slot1_1
>>
>> -- This works, my Dynamic_Slot_Id is available for each slot
>>
>> This doesn't work:
>>
>> [root@dev-cod6-head tmp]# condor_status -long|grep MEM
>>
>> MEMORY_USAGE_IN_BYTES =
>> eval(strcat(toUpper(DYNAMIC_SLOT_ID),"_cgroup_memory_usage_in_bytes"))
>>
>> MEMORY_USAGE_IN_BYTES =
>> eval(strcat(toUpper(DYNAMIC_SLOT_ID),"_cgroup_memory_usage_in_bytes"))
>>
>> MEMORY_USAGE_IN_BYTES =
>> eval(strcat(toUpper(DYNAMIC_SLOT_ID),"_cgroup_memory_usage_in_bytes"))
>>
>>
>> [root@dev-cod6-head tmp]# condor_status -autoformat MEMORY_UAGE_IN_BYTES
>>
>> undefined
>>
>> undefined
>>
>> undefined
>>
>> -- Bugt oddly enough, this DOES work
>>
>> [root@dev-cod6-head tmp]# condor_status -autoformat
>> 'strcat(toUpper(DYNAMIC_SLOT_ID),"_cgroup_memory_usage_in_bytes")'
>>
>> SLOT1_cgroup_memory_usage_in_bytes
>>
>> SLOT1_cgroup_memory_usage_in_bytes
>>
>> SLOT1_1_cgroup_memory_usage_in_bytes
>>
>> And if I run
>>
>> [root@dev-cod6-head tmp]# condor_status -autoformat
>> SLOT1_1_cgroup_memory_usage_in_bytes
>>
>> 14090240
>>
>> 826781696
>>
>> 826781696
>>
>> This actually appears to work. I was trying to use eval() to actually
>> get the proper dynamic slot classad. Can anyone tell me what's going
>> on? Been banging my head against the wall for a day
>>
>> Best,
>> Evan
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>
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