Oh how I wish I could put RC5 here at work!

[Valhalla1]

I work at a datacenter with 7 IBM s/390 mainframes, and a few Amdalh mainframe boxes, about 250 PC's, 35 Sun servers and Sparc workstations, and some dual- and quad- cpu HP Unix servers. (see our website here I woul LOVE to see how these mainframes could crunch those RC5 numbers, and as you can see from our statistics charts, the boxes currently aren't used to their full potential -



Link 1
Link 2
Link 3
Link 4
Link 5


would be sweet to get the client installed on all the pc's too.. but I NEED to keep my job. I might try putting it on as many of the pc's as I can, but the mainframes are OUT of the question, it would be caught in all of 2 seconds (I'm in operations, one of our duties is to make sure started tasks or runinng jobs DON'T take up too much cpu useage) and I've already mentioned it only to be struck down.

but sneaking it on a few pc's might be an option. and currently I don't have full access to the Sun boxes, and some of the HP Unix boxes aren't able to get out of our network to the internet, they are firewalled out

 

[DanC]

Don't SNEAK under any circumstances. That would be too much like some other folks we know.

If you don't have full permission, don't do it.

You might try honing your skills with the many benefits of RC5 on workstations, but on production servers... it's "just not happenin'".... That's understandable.

 

[Valhalla1]

on a sidenot, anyone have any idea how mainframes stack up to PC's in RC5 cracking?

 

[narzy]

vallhalla DO NOT SNEAK THE CLIENT ON ANY PC THAT YOU DO NOT HAVE EXPLICIT PERMISION! if you do number 1 out team COULD get DQed and 2 you could loose your job and trust of fellow coworkers, however you may be able to, ask you boss if you can test it on a machine or two, tell him what its all about and see if there is any preformance impact if there is not, show him that data and ask if you can install it on the rest of the machines. I use somthing along the lines of "its quite a waste to have them just sit there not at 100% if they are doing somthing they are getting there moneys worth" but pretty that up ALOT...its very blunt.

say somthing to the effect of:

"as you can see from our current data charts out systems are not running at 100% effencicy we may beable to get faster preformance from them if we installed a program that kept the CPU at 100% but did not impact the preformace of the machine such as the Distriubted.net Client crunching RC5/64..."

and its true too! if you run the CPU at 100% it does not ever have to "Warm up" if you go away and come back to use it, I know on my machine It would be sluggish for a few minutes right after I got back to using it...with the dnet client running i never see that latency.

BUT DO NOT SNEAK THE CLIENT ON! ASK! if they say no, then so be it...

Good Luck

 

[RaySun2Be]

Valhalla1,
Ditto on securing permission.

As an old mainframe/S36/AS-400 COBOL programmer/DBA, I too however, would be interested in knowing what the output is of an IBM mainframe running the RC5 client, especially in keyrate per MIPS.

We have a small OS/390 machine here, a CDS 2000, designed in part by Mr. Amdahl as one of his entrepreneural adventures. It's an 8 MIPS machine, CDS 2000.

We have one sitting crated up that we are planning on auctioning on E-Bay. If it wasn't crated up, I would have fired it up and tried out the RC5 client on it by now.

It was actually a nice little box, great replacement for the IBM 33xx boxes of old. Unfortunately, they were trying to market them as Y2K test and replacement boxes, but took too long getting them to market, when most companies had already had their test or production systems in place or replaced.

 

[networkman]

Yes, DEFINITELY make sure that you do get permission!!!

One thing to consider is asking if you could load the RC5 client during off-times.. maintainance, holidays, etc. Would that be possible? Maybe for the PCs, only schedule it for off-work hours.. say 9pm to 6am or something similar.

 

[JonB]

Plus, there is "permission" and then there is "upper upper level permission." I had local permission, but someone outside our department decided that the occasional buffer updates to D.Net were really an attempt to steal IP addresses. The result for me? I lost 40,000 blocks per day at RC5, but did keep my job. So, yes, it is not something you put on company hardware without high level permission.