[geeks] Testing E10k RAM

[JP Hindin]

On Wed, 10 Jan 2018, John Core wrote:
> During that time period Sun programed OBP to reject memory that wasn't "Sun
> branded". Do you chips say Sun on the label?

Yes - the "DRAM out of spec" error was coming off the Netfinity and is 
presumably a mismatch of hardware I'm not informed enough to identify. I 
suspect any faults with the RAM that the E10k is reporting is valid bit 
rot.

Thanks;

  - JP

> On Tue, Jan 9, 2018 at 6:05 PM, JP Hindin <jplist2008 at kiwigeek.com> wrote:
>
>> Greetings;
>>
>> In the process of bringing up an E10k I keep striking DIMMs that are bad.
>> I could spend a day sitting in front of it, powering node boards up and
>> done and constantly re-POSTing the machine to identify more bad sticks, but
>> this seems fraught with danger of releasing the blue smoke from DC
>> components.
>>
>> I was wondering if anyone had any suggestions for a safer, and hopefully
>> more convenient way, of testing the DIMMs. I had read that an IBM Netfinity
>> used similar enough memory that it should work - and I have a Netfinity
>> 7000 with a 16 slot board that would've made this quite convenient with
>> memtest86+, but alas, the Netfinity is wise to my scheme and tells me the
>> DIMMs are out of spec and refuses to bring them up.
>>
>> It's also been suggested I use a RAM tester which I might purchase from
>> eBay - but I'm a bit leery of spending $50-$100 on a RAM tester that might
>> not work with this RAM for some daffy reason and getting stuck with a
>> useless device.
>>
>> Opinions and suggestions are very welcome;
>>
>> Fine day to you all.
>>
>>  - JP
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