1. Jul 18, 2006

### Sherwyn

Fastest Computer

Where would I find information on the fastest computers in the world?

2. Jul 18, 2006

### MeJennifer

Here is a http://www.top500.org/lists/2006/06" [Broken]

Last edited by a moderator: May 2, 2017
3. Jul 18, 2006

### Sherwyn

can u convert 280.6 TFlop/s to a more managable unit?
also, how fast is one megaflop

4. Jul 18, 2006

### FredGarvin

5. Jul 18, 2006

### MeJennifer

Well I do not understand your question.

A flop is one floating point operation (an operation on a non-integer).

6. Jul 18, 2006

### Sherwyn

How fast is a Teraflop?

Can someone convert 280.6 TFlop/s to more managable units?
also, how fast is a megaflop?

7. Jul 18, 2006

### Sherwyn

What exactly is a cluster?

How fast are the fastest clusters, and does anyone know how fast the cluster(s) is/are at the University of Richmond?

8. Jul 18, 2006

### Sherwyn

My mistake

how many flops/s can any ordinary pc run? and how would i compare that to the fastest (280.6 TFlop/s)

9. Jul 18, 2006

### Sherwyn

woops. not how fast, but how many flops are in a megaflop, or a teraflop?

10. Jul 18, 2006

### MeJennifer

Mega and tera are both greek words.

Mega stands for 1 000 000
Tera stands for 1 000 000 000 000

11. Jul 18, 2006

### seaglespn

prefix mega means 10^6 over the basic unit.
prefix giga means 10^9 over the basic unit.
prefix terra means 10^12 ............

so there are 1.000.000.000.000 flops in a terra flop
1.000.000.000 flops in a giga flop and so on....

These prefixes can be applied to any unit, not just to flops(i.e. MegaByte but here is a kinda different story because the basic units are in bynary not decimal.)

12. Jul 18, 2006

### Staff: Mentor

megaflop

A megaflop is a measure of a computer's speed and can be expressed as:
A million floating point operations per second
10 to the 6th power floating-point operations per second
2 to the 20th power FLOPS

http://whatis.techtarget.com/definition/0,,sid9_gci212543,00.html

Also http://en.wikipedia.org/wiki/Petaflops

megaFLOPS (MFLOPS) is equal to one million floating-point operations per second, and a gigaFLOPS (GFLOPS) is equal to one billion floating-point operations per second. A teraFLOPS (TFLOPS) is equal to one trillion floating-point operations per second.

http://www.webopedia.com/TERM/F/FLOPS.html

You should be able to calculate it with this information.

13. Jul 18, 2006

### Gokul43201

Staff Emeritus
Well, 'terra' actually means 'ground' or 'land'.

It's 'tera' which is 1000 times bigger than 'giga'!

Last edited: Jul 18, 2006
14. Jul 18, 2006

### Staff: Mentor

First, you know what the prefixes mean, right?

Kilo = 1,000
Mega = 1,000,000
Giga = 1,000,000,000
Tera = 1,000,000,000,000

For the processing power of pc's, hardware review sites have them. Here is a sample: http://www.tomshardware.com/2006/07/14/core2_duo_knocks_out_athlon_64/page16.html

Newer pc's are on the order of 10-20 gigaflops, so about 10,000 times slower than a supercomputer (which, incidentally, are often just clusters of several thousand desktop processors).

Last edited: Jul 18, 2006
15. Jul 18, 2006

### Andrew Mason

It is a term used in astrophysics, physics, chemistry, computer programming, computer disk drives. Maybe they have some really fast computers at the University of Richmond.

Check out http://en.wikipedia.org/wiki/Cluster_(physics)" [Broken].

AM

Last edited by a moderator: May 2, 2017
16. Jul 18, 2006

### Sherwyn

Serious Help needed

how do i found out how to run a test on a cluster to find out the speed?

17. Jul 18, 2006

### MeJennifer

Well that depends what you want to measure.
Is it pure CPU speed, for each CPU separately or on how they work togeter? Or is it disk throughput, like for some database application, network server performance? There are many things you can measure.

Last edited: Jul 18, 2006
18. Jul 18, 2006

### Sherwyn

Cluster Speed

How do i find out the speed of a cluster? I'm supposed to figure how to run a program to determine the speed of our cluster here at UR.

19. Jul 18, 2006

### chroot

Staff Emeritus
That's a rather vague question, as we don't know anything about UR's cluster. This sounds like some kind of a lab, though, meaning you should probably have some sort of handout that provides help.

There may a simple benchmarking program provided for you. Or maybe you have to write your own. If you have to write your own, of course, you'd have to use some kind of cluster library (MPI, etc.) to distribute the work across all the nodes in the cluster, which could be difficult.

If you have some kind of background information, you should provide it as part of your question. Otherwise, there's really nothing we can do to help you.

- Warren

20. Jul 18, 2006

### Sherwyn

I dont know really. I was told to just figure out how to determine how many megaflop/s its running and compare it to other clusters (specifically the faster ones). Should I have been given more information or what?