Posts by TOM


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1) Message boards : Cafe SETI : Das Deutsche Cafe. The German Cafe. (Message 1342330)
Posted 566 days ago by Profile TOM
Zum einen habe ich den SIV64X im Einsatz http://rh-software.com/downlads/siv.zip. Der bietet eine Boinc Statusüberwachung und hat eine variable Auto-Retry Funktion. Zum anderen habe ich mir noch eine simple Batch Datei gebastelt, die steckengebliebene Downloads regelmäßig durch kurzes Anhalten der Übertragung wiederbelebt:

"C:\Program Files\BOINC\boinccmd" --set_network_mode never 2
timeout 125
%~f0


Einfach aber wirkungsvoll...
Gruß Tom
2) Message boards : Cafe SETI : Das Deutsche Cafe. The German Cafe. (Message 1340628)
Posted 571 days ago by Profile TOM
Hast Du umgelabelt? ;-)
Gruß Tom
3) Message boards : Cafe SETI : Das Deutsche Cafe. The German Cafe. (Message 1338848)
Posted 580 days ago by Profile TOM
Zum Glück kann man den "Retry Knopf" ja auch auf verschiedene Arten automatisieren, dann sieht der auch nicht so abgenutzt aus ;-)...
4) Message boards : Number crunching : Panic Mode On (73) Server problems? (Message 1217608)
Posted 889 days ago by Profile TOM
57 SETI@home 13.04.2012 11:55:31 Requesting new tasks for GPU
62 SETI@home 13.04.2012 11:57:49 Scheduler request completed: got 0 new tasks
63 SETI@home 13.04.2012 11:57:49 Message from server: No tasks sent
64 SETI@home 13.04.2012 11:57:49 Message from server: No tasks are available for Astropulse v505
65 SETI@home 13.04.2012 11:57:49 Message from server: No tasks are available for SETI@home v7
66 SETI@home 13.04.2012 11:57:49 Message from server: No tasks are available for AstroPulse v6
73 13.04.2012 11:58:38 Internet access OK - project servers may be temporarily down.

Panic Mode On, Server Problems!
5) Message boards : Team Recruitment Center : seti.international [IX.] (Message 1208886)
Posted 911 days ago by Profile TOM
pls sign me in, too

http://setiathome.berkeley.edu/show_user.php?userid=1667993
6) Message boards : Number crunching : HE connection problems thread (Message 1145647)
Posted 1119 days ago by Profile TOM
To me it looks like trying to ride a dead horse.
Sorry for that...
7) Message boards : Number crunching : Member helps member which have connection problems. (Message 1145100)
Posted 1120 days ago by Profile TOM
Apache and IIS are Webservers, a Proxy is a complete different thing. It works like a broker in the middle, and controls who has access to the internet. It can do some caching and it acts as a substitute for the user and chages the users IP-Adress into its own address and vice versa. This may be the reason why it works with the d***** router at HE.
8) Message boards : Number crunching : Member helps member which have connection problems. (Message 1145082)
Posted 1120 days ago by Profile TOM
Proxy is a Programm or Service that needs to be installed and configured on a PC. This is commonly used on a Server like Squid on Linux or MS-Proxy on Windows- Server. I don't think that there are so much versions for a normal Windows Workstation. As a quick search i found FreeProxy. Looks like freeware and runs on windows, but i never tested it. Maybe you can install a Squid-Proxy on Linux in a VM. I will take a look at that, i have to get my kids under control if(!) we hopefully get some more bandwith. BUT(!) there are potentital security risks about doing that, because a normal Proxy is placed behind a firewall (or two) to prevent someone to access this proxy from ouside. You have to drill some holes in the firewall to get this going. AND(!) a Proxy is not a Programm that is installed like klick and here we go, there is some configuration to do.
9) Message boards : Number crunching : Panic Mode On (52) Server problems? (Message 1143076)
Posted 1126 days ago by Profile TOM
Servers still all dead in the water, eh?

Kitties crunching from cache..........

Meow.


They just got a lifebelt... ;-)
10) Questions and Answers : GPU applications : assign more cpu to gpu? possible? (Message 1139973)
Posted 1133 days ago by Profile TOM
You should be able to run more than one WU at the same time on a gtx570. First try 2 wu's at the same time, this will push it to aroud 90%.

For instructions try this link:

http://setiathome.berkeley.edu/forum_thread.php?id=63210

But be aware of good cooling !!!
11) Questions and Answers : Windows : Installing a 4 Disk RAID-ARRAY, cause it's the first time I'll do this, some help would be nice! (Message 1123797)
Posted 1175 days ago by Profile TOM

First question, if the HD has (about) the same build; Cylinders; Heads; Cache and RPM, can I use these.

You should be able to use it, if you use hardware always look for bios/firmware/driver updates.


This would give me a 2x 500GByte storage, maybe not ideal for a BOOT Device, also
quite big.

You will see a single 1 TB Disk, if you think it's too big you can do patitions on top to organize storage. 1 TB of storage i think it's a normal disk size for actual PCs.

(A SSD is, now a days, probably, cheaper and easier in both setup and use
and maintenance!)

A SSD of 1 TB in size is very expensive in comparison to your hard disk configuration, a good 500GB HD it's about 35€, a 500GB SSD it's about 800€ or more!

Reliability of SSD's is an issue, because this is a very new kind of product. There are problems with the build in memory controlers, just right now there is a call back by a big SSD-Vendor.

What Windows OS do you use?

SSD's need special otions to avoid problems.
They are build on flash memory cells which can be written only a 1000 times, so the memory controler has to spread the write commands across the disk, to guaratee the lifetime of each memory cell on the SSD.
You shouln'd do defrags on a SSD, and there are problems with hiberation and cache files which should be displaced to a non SSD.
Win7 is partialy aware and turns of defragmentation if you connect an SSD. Older Win OS's do not and you can easyly kill your SSD with defrag.

A combination of a small affordable SSD and HD's is actual the best thing to do. The new Z68 chipset contains funtions which supports a special combination of a small SSD for speeding and regular HD's for storage and reliability.

A RAID 0+1 is nuch more fault tolerant as a single SSD, if you lose one HD you can continue to work and order a new HD, if you lose a single SDD you got noting but your backup, bertter you should build a RAID 1 using 2 SSD's blowing up the price. SSD or not, always have a good backup!!!

I personally use a RAID 1 build of 2*2TB HD's for System and a RAID 5 build of 4*2TB HD's for data storage both on hardware controllers. AND some extermal USB-HD's for backup. OK, this is overkill for crunching, but the System is also used for other things than seti ;-).

If you only want to build cruncher a RAID 1 containing 2*500GB HD's would be very sufficient.
12) Message boards : Number crunching : 110V instead of 230V, less W consumption? (Message 1117776)
Posted 1191 days ago by Profile TOM
The efficiency of a PSU is dependent on the load (current) and the voltage/frequency input.
My 1200W PSU has an efficiency of:

PSU-Load---20%---50%--100%
230V/50Hz 88,6% 91,8% 90,2%
115V/60Hz 87.5% 90,1% 87,4%

simple speak:

  • The Power is the Product of Voltage and Current, but the Current is the main source of loss. That's one of the reasons why we use very high voltage to transport Power over long distances. If you halve the voltage you must double the current to get the same power, thath's the law of nature.
  • If you use extra components to reduce the voltage, these components consume extra energy. For example: if you combine a Transformer with an efficiency of 90% and a PSU with 90% you get a resulting efficiency of 81%. So there is no gain in doing so. There are Transformers to reduce the voltage from 230V to 115V, but they are only used by special (old) equipment where you can't switch between 115V and 230V. Modern equipment is switchig automaticly between different voltages.
  • Antoher reason not to reduce the voltage is stability. Electronic devices are suspectable of reducing or increasing the input voltage. Of course they have a tolerance level but this is almost +/- 5%. If you leave this tolerance floor there is no guarantee of proper function.

13) Message boards : Number crunching : EVGA GTX580/590 Hydro Copper cards & psus (Message 1110437)
Posted 1211 days ago by Profile TOM
Yes you will need a big case and don't forget about a massive cooling system.

I've got a big case, It's a Cooler Master HAF-932 that I have, Cooling, Lets see I have 3 radiators(120x360ea), a couple of pumps, both w/a reservoir.


Ok, that's cool and you don't need any heating during winter ;-)
14) Message boards : Number crunching : EVGA GTX580/590 Hydro Copper cards & psus (Message 1110301)
Posted 1211 days ago by Profile TOM
Yes you will need a big case and don't forget about a massive cooling system.
15) Message boards : Number crunching : EVGA GTX580/590 Hydro Copper cards & psus (Message 1109920)
Posted 1212 days ago by Profile TOM
The Silversone ST1500 1500W PSU has 4 6Pin PCIE Connectors and 4 8Pin PCIE Connectors. If you look at the EVGA SPECS of the gtx590 you need 2 8Pin or 4 6Pin Connectors for each card:
Requirements
Minimum of a 700 Watt power supply.
(Minimum recommended power supply with +12 Volt current rating of 50 Amps.)
Two 8-pin PCI Express power connectors or four available 6-pin PCI Express power connectors

Inside the EVGA gtx590 Box you can find 2 adapters for making one 8Pin out of two 6Pins. So you can run 3 gtx590 cards with the ST1500 PSU.

Only if you want to run 4 gtx590 you need to have a second PSU.
16) Message boards : Number crunching : EVGA GTX580/590 Hydro Copper cards & psus (Message 1109562)
Posted 1213 days ago by Profile TOM
I have 3 gtx580 Hydrocopper2 with 1.5GB Ram in my system. I run 4 WU's on each card at the same time. The GPU load on the cards is around 90%-95% and memory consumption is around 1200MB. I think you don't need to buy a gtx580 with 3GB RAM because the GPU load is already at max with 4 WU's. The power consumption of my system is around 850 to 950W. You will need a 1200W PSU for 3 gtx580 or 2 gtx590 or a 1500W PSU to run 4 gtx580 or 3 gtx590. I'm looking for a PSU to run 4 gtx590 but they are hard to find. I think i'll try to put two 850W PSU together in a spcial case.
17) Questions and Answers : GPU applications : Updated drivers from Nvidia? (Message 1106037)
Posted 1224 days ago by Profile TOM
Don't play around with overclocking on this card!
You can find some videos on YouTube with smoking gtx590... Thats why i dicidet to buy 3 gtx580 instead of 2 gtx590 and im still fighting whith the drivers. First i was lucky to see NVidia updating the drivers very quickly. But they fix some problems and unfortunatly you get some new. This downclocking problem with the new driver and the lunatics app is crazy. I don't know if you can use the 266.58 driver with the gtx590. The 270.x is dealing with cuda 4.0 causing your gfx to clock down do medium power state and triple the crunching time. May be you can make some experiance and keep me informed what's going on. Hopefully the guys from lunatics will get the new opt app working with cuda 4.0.
cu
18) Questions and Answers : GPU applications : Updated drivers from Nvidia? (Message 1105862)
Posted 1224 days ago by Profile TOM
May be the guys from NVidia turned over, because some Users blown up their brand new gtx590 cards with insufficent drivers...
19) Questions and Answers : GPU applications : Updated drivers from Nvidia? (Message 1105577)
Posted 1225 days ago by Profile TOM
What driver do you want to use ?
Stock app or optimised app ?

Tip: disable SLI and try 266.58, this is the driver of choice, dont use 270.x there are issues:

http://setiathome.berkeley.edu/forum_thread.php?id=63858
20) Questions and Answers : GPU applications : SLI and bad computed WU's (Message 1105568)
Posted 1225 days ago by Profile TOM
You don't have a choice, if you want to do WU's on GFX in time. ;-) The new drivers come with CUDA 4.0 to deal with WU's. After some time the driver crashes and the system will restart the the gfx driver. Most of the GPU's then are clocked constantly down to medium Power and Performance level and will slow dramaticly down. You can use Tools like GPU-Z or others to check this out.

Do you run stock app or optimised apps ?

If you interested in some discussions about the new NVidia driver you can take a look here:

http://setiathome.berkeley.edu/forum_thread.php?id=63858


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