Bitcoin Forum

Often in science units are replaced with a name. Think Kelvin, Celcius, Watt, Ampere, Pascal, Coulomb, Volt, etc.... Similarly, that has also happened with the 'satoshi'  replacing the smallest current denomination of bitcoins.

As the term 'Terrahash per second' is a mouthful, what do people think about replacing that with a name or a simpler term?

If you were going to rename it, what would you call it? Would you use a person's name? Whose name would you use?

The base unit is hash/second

We don't use a special name for Kilowatts or Megawatts, it is just a prefix (i.e. Kilowatt = 1000 watts) and the base units watts.

What about terrahash? That might  be a good name for thash. Aint it?

When I read "TH/s" or "GH/s", I pronounce them in my head as "terrahash" or "gigahash", but I don't think we need to actually call them that. D&T is right: we don't need to adjust anything.

TH/s is simple enough.

retarded-ideas-per-second?

Terahash, not terrahash. Terra = earth, Tera = SI prefix based on teras = monster.

Derps per lunar cycle.

I think OP is more specifically referring to the "per second' part.

A better example would be Hertz which means 'cycles per second'.


When we talk about CPU's we don't go around saying "3 Gigacycles per second" we say 3 gigahertz.

OP has asked a legitimate question, in my opinion.

Actually come to think of it, simply using Hz is appropriate here. "My cards are hashing at 20 gigahertz" makes sense.

Fred

Hashrate.  Defined as Hashes-per-second.  Symbol 𝓗.  T𝓗 = Terahashrate, etc.

(Also, I'm using 𝓓 for difficulty.)

It's worth pointing out that the units for velocity and acceleration, two of the most important quantities in physics, don't have a special name. We just use meters per second and meters per second squared.

Hashrate is the quantity being measured. It's not an appropriate name for the unit.

Using D or 𝓓 for the difficulty is fine. But difficulty has no units, it is defined as the ratio between the max target and the current target, and is thus a pure number.

By the time you herd enough cats to land on a common term we will have surpassed the need and have moved on to PH/s.

I often want to say terahertz, and I think it's perfectly fine.  Terahash is fine for slang.  Something like tera-HiPS would be similar to teraFLOPS.

what he/she said  :D

Kish = KH/s
Mish = MH/s
Gish = GH/s
Tish = TH/s

I'm gishy.  :D

Hmmm, MonsterHash/s, not bad.  I still like Fred though.

In that case, the next steps would be Pish (Pèta) and Eish (Exa).
Especially the last one would sound weird to me...

How about TH/s?

could be pronounced (thps)

Hz is already taken, and I can't stand it when people use it to describe hashing performance. It measures clock speed, not hashing performance.

My 7970 runs at 1.2GHz, but only gets 0.7GH/s. I can't say it runs at 1.2GHz and hashes at 0.7GHz, that's just way too confusing!

No, it measures 'cycles per second'. The cycle can be anything.

If I can eat 8.6 apples per day, then I eat apples at a rate of 0.0001 Hz.

If my card can check 2 billion hashes per second, then it's checking hashes at 2 GHz.

first of all

Hz is the symbol of Hertz

H is hashes.

so your 7970 gets .7 GH's at 1.2 Ghz's

understand there's a difference between Hertz and hand hashes, the z wasn't just throw in there for shits and giggles.

Hz is the SI unit for cycles PER SECOND. The CORRECT way to write the above is "7970 gets .7 GH's at 1.2 Ghz" there is no cycle per second second.

, it is irrelevant what you think you can and cannot say, it is a matter of clearly communicating information using a pre-established system, the fact that you might not like it is irrelevant.

You can either say it hashes at 700MH/s or 0.7GH/s, who gives a shit about the perceived clock rate(unless you are talking about clock rates, and then exactly WHAT clock rate are you talking about?, internal /external/stage?)

or you can say my unit hashes at 700MH/s but the EXTERNAL clock rate is only 100Mhz or my unit hashes at 700MH/s and the INTERNAL clock rate is a blistering 1.2ghz.(good luck on a 1.2ghz external clock rate.... you would be microwaving yourself...)

Hz describes way more than clock speed.  Would you get confused if I told you that your GPU fan rotates at 33 Hz while it "runs" at 1.2GHz?

Geez. Make one comment and everyone jumps up my ass.  ::)

yes. and you deserved it because you was a tard.

Crazyates is absolutely correct. Hz means "cycle per second". Calculation of each hash does not define a cycle because multiple hashes are computed in parallel. A "cycle" here could be the time from one calculation to the next; if multiple units are hashing together they increase the hashrate, but they do not magically shorten the cycle.

Example:
We have a device for which each clock cycle takes 1ns. Its clock rate is therefore 1 GHz.
It takes 10 clock cycles to compute a hash. So the hash calculation frequency is 100 MHz.
The device has 1000 cores calculating hashes in parallel. So the hashrate is 100 GH/s.
But there is nothing here working at 100GHz because there is no cycle that takes only 0.01 ns.

The given "counterexamples" for varied uses of Hz all involve actual cycles with period that can be inferred from the stated frequency.

I think I'll adopt this.

Indeed, my bad.

Inspired by FLOPS I offer:

SHAPS (Secure Hashing Algorithm [executions] Per Second)

or better, I think,

SHOPS (Secure Hashing Operations Per Second)

Thank you for accurately explaining what I was too stupid to say in my first post.