Ask Asher

[Asher]

Originally posted by Patroklos
When will the US housing market bottom out so I can get the best deal before prices rebound to a degree?

In 3.5 years, it will boom.

[Lorizael]

Asher, how will I pay my credit card bill next week?

[Asher]

Originally posted by Lorizael
Asher, how will I pay my credit card bill next week?

Prostitution works for some people. I haven't seen your picture, but this may be an option given your age and a penchant for sexually confused Russians to be lurking around here.

[Serb]

Re: Re: Re: Ask Asher

Originally posted by Asher

I'm assuming you constantly referred to them as "cigars" because they are most similar in circumference to your member.

Your assumption is wrong. I reffer to them as "cigars", because I believe that members of Canadian bi-sexuals and gays are most similar in circumference to a "cigar", otherwise they would have sex with a women.

To answer your question: No, not yet.

But you hope you will? Otherwise your day is lost, no?

Considering gender is a physical trait, I find this a curious question. Do you question your masculinity to the point that you force yourself to have sex with women?

I don't question my masculinity at all. I just consider your homosexuality a sexual perversion.

It's not a complex when it's true.

Thanks for the laugh.

Everyone knows Russians are alcoholics and failed engineers.

And everyone knows that the ones who say so are Canadian gays addicted to gay porno.

The best thing your country has done for the world is Vodka.

Not only vodka. The list of the Russian contributions to the human civilization can take pages. However, what is your country did for the human kind? Hockey?
We own your pitty asses at every Olympic.

p.s. Ok, I give you a credit for the velcro, you "superior engineers".

[Kuciwalker]

Originally posted by Asher
I'm afraid I don't quite understand what you are getting at.

You are referring to systems like, say, the Xbox 360. It has 3 high-speed CPUs and one memory system and one set of cache to share.

Or a quad-core PC.

When you say cache is flakey, I'm assuming you mean cache in the traditional desktop CPU sense, where it is managed automagically.

Yes.

To get around this, some systems (like the Xbox 360 CPU) have cache locking. CPUs can arbitrarily "own" segments of the cache and treat it like ultra-high speed memory rather than traditional cache. This eliminates some of the headaches of multiple cores sharing the same memory space.

That's 1) probably expensive to do frequently and 2) impossible to use for synchronization between cores, by nature

I've never encountered a situation where I'd need to lock the bus or would in any way benefit from putting some of the memory logic onto the memory itself.

In our threading libraries for OS, they suggested the XCHG (atomic exchange) instruction as a way to implement mutexes. One of the professors metioned that on a modern multicore machine this locked the memory bus, which cost a huge number of cycles.

If you do the logic right away or you need to dispatch it to someone else to compute, it's still getting done. I also would be wary of de-centralizing memory address calculation, because the CPU needs to be aware of that at all times. If the memory chip is updating the address, the CPU needs to eventually update as well?

Perhaps you could provide an example usecase where this would be beneficial.

Sure. I have a list of data that I want to asynchronously add to. If I can atomically increment the size variable, I won't try to add two items into the same spot. Normally, to make the increment atomic I need to use a mutex or other synchronization primitive. If size++ were implemented as one instruction instead of two, though, I wouldn't need a mutex at all.

[Asher]

Bombardier > Tupolev.

The Russian engineers are so pathetic they used corporate espionage to steal FRENCH and BRITISH airplane designs. I don't know how much more proof you need.

[Serb]

Originally posted by Asher

Prostitution works for some people. I haven't seen your picture, but this may be an option given your age and a penchant for sexually confused Russians to be lurking around here.

ok. I give you another credit for your sence of humor. That was funny.

[flash9286]

Should I worry that wifi is harmful to my health?

[Serb]

Originally posted by Asher
Bombardier > Tupolev.

The Russian engineers are so pathetic they used corporate espionage to steal FRENCH and BRITISH airplane designs. I don't know how much more proof you need.

Yeah, sure, our spaceships and aircrafts are copy/paste of French and British designs
Dumbass
Does Canada has its own aircrafts and spaceships? How much of the world's space/aircraft (civilian and military) market it controls? None? Wow! You are quite superior engineers

p.s. Btw, wtf is Bombardier?

[Spec]

What do you think of white wannabe black guys?

Spec.

[Asher]

Originally posted by Kuciwalker
That's 1) probably expensive to do frequently and 2) impossible to use for synchronization between cores, by nature

Not necessarily. Eg, with 2MB of cache and 4 cores, you can lock 256KB to each of the 4 cores for "local store" space, and 1MB shared.

In our threading libraries for OS, they suggested the XCHG (atomic exchange) instruction as a way to implement mutexes. One of the professors metioned that on a modern multicore machine this locked the memory bus, which cost a huge number of cycles.

Sure. I have a list of data that I want to asynchronously add to. If I can atomically increment the size variable, I won't try to add two items into the same spot. Normally, to make the increment atomic I need to use a mutex or other synchronization primitive. If size++ were implemented as one instruction instead of two, though, I wouldn't need a mutex at all.

Any time you fetch from main memory it costs a huge number of cycles.

Are you dealing with an absurdly old x86 implementation?

CMPXCHG permits lock-free synchronization.

[Asher]

Originally posted by Serb


Yeah, sure, our spaceships and aircrafts are copy/paste of French and British designs
Dumbass
Does Canada has its own aircrafts and spaceships? How much of the world's space/aircraft (civilian and military) market it controls? None? Wow! You are quite superior engineers

p.s. Btw, wtf is Bombardier?

Canada controls more of the world/space market per capita than Russia. FACT.

And yes, your aircraft tend to be the result of espionage. One of your earliest passenger airliners was a ripoff of an American long-range bomber from World War 2. The Tu-144 was the result of stealing Concorde plans, except the Tu-144 had issues in not crashing.

[Asher]

Originally posted by flash9286
Should I worry that wifi is harmful to my health?

I wouldn't. I don't.

[Asher]

Originally posted by Spec
What do you think of white wannabe black guys?

Spec.

Hate them. I think it shows they have identify issues. They're racial transvestites.

[Solver]

When will solid state drives have a comparable cost-to-size ratio to today's hard drives?