Longer MB units

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Speedy
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Message 890437 - Posted: 2 May 2009, 5:12:22 UTC - in response to Message 890338.  

My last post is for Richard Haselgrove. Sorry for the confusion.
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Richard Haselgrove Project Donor
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Message 890469 - Posted: 2 May 2009, 8:10:32 UTC - in response to Message 890338.  

Starting today, P2030 is getting five more observing slots on consecutive days (01 May - 05 May). I hope Eric can come up with some way of alleviating the CUDA VLAR problem before those tapes hit the splitters.

Fred J, out of interest where did you see that they are allowing five more observing slots for P2030 on consecutive days (01 May - 05 May)? Thanks in advance. If the tapes hit the splitters before the 10th Anniversary I doubt that it will get looked at because all focus is been into nitpicker

Follow the Arecibo observing schedule link, as in my earlier post, and pick a likely-looking 'fortnight commencing' link in the left-hand frame. I found P2030 on the Apr 23rd. page, starting around 4 AM local time - that's what you get for being an astronomer!
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Message 890479 - Posted: 2 May 2009, 8:59:54 UTC - in response to Message 890469.  

Thank's for explaining. It will be interesting to see see how long it takes to process the information and then to see how long it takes for the tape to be added to the splitters. Do you have a eta in mind? I have no idea.
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Message 890486 - Posted: 2 May 2009, 9:57:19 UTC - in response to Message 890479.  

Thank's for explaining. It will be interesting to see see how long it takes to process the information and then to see how long it takes for the tape to be added to the splitters. Do you have a eta in mind? I have no idea.

No idea at all! All you can do is keep an eye on the tape list on the server status page. AP is splitting 14 March 2009 today: a couple of odd tapes (very odd) for 07 April have been queued up already: yet there are tapes from last December still in the system, as we've been discussing in this thread.

You could try asking Matt, but I doubt you'll get an answer - he likes to keep us guessing about things like this (like his thread titles).
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Message 890491 - Posted: 2 May 2009, 10:18:26 UTC - in response to Message 890486.  

You are right about the splitters. I might pm Matt and ask him all I'd like to really see is a inter cater as to when new tapes are added and maybe started. I think i' the only one that wants this information. If other people like the idea of this information can you please click the + at the bottom of my post. Thank you in advance.
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Message 890509 - Posted: 2 May 2009, 12:19:21 UTC - in response to Message 890491.  

If other people like the idea of this information can you please click the + at the bottom of my post.

I'd like to, but I don't see any + (nor -) here at S@h, only a !(red X) and I don't think you want me to click that ;)
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Message 890643 - Posted: 2 May 2009, 19:32:22 UTC

Some random thoughts stirred by previous posts...

When a box of hard drives with data arrives from Arecibo, as time is available the data is pulled off and resaved as tape size files. Once all the drives have been processed, they can be sent back to Arecibo. Matt has spoken about the pipeline several times, the step of actually mounting the drives can't be automated. As the files are created, while there's space in a local storage array they'll be put there and probably automatically added to the list of available 'tapes' on the server status page. When storage is getting tight the created files can be transferred to the HPSS down the hill at LLBNL, assuming there's enough bandwidth available to send them. At other times, if the files available for splitting seem likely to run out some data can be brought back from the HPSS.

IMO the list of 'tapes' on the server status page is enough, it gives a fair picture of what's coming in the next week or so. My guess is a new mb_splitter process chooses the next 'tape' file in the order they were added to storage, if so I'd prefer the status page list in the same order.

There has been a recent problem recording data, a new SATA card was sent to Arecibo then a different cable. I haven't tried to infer more detail from Matt's posts, but it's quite possible some of the A2030 observations haven't been recorded.
                                                         Joe
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Message 891076 - Posted: 4 May 2009, 3:52:48 UTC - in response to Message 890643.  
Last modified: 4 May 2009, 3:54:20 UTC


I'd prefer the status page list in the same order.

I agree completely
I might pm Matt and ask him all I'd like to really see is a inter cater as to when new tapes are added and maybe started. I think i' the only one that wants this information. If other people like the idea of this information can you please click the + at the bottom of my post. Thank you in advance.
I'd like to, but I don't see any + (nor -) here at S@h, only a !(red X) and I don't think you want me to click that
You are correct there is no + or - they use that system over in the Rosetta forum. I have decided that I'm not going to connect Matt over this issue. But by all means if you strongly about the issue I will most certainly back you just pm me.
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Message boards : Number crunching : Longer MB units


 
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