Lecture 1/9:Caches-Intro

Part 1 of a 9 part series on cache memories. Prof. Harry Porter, Portland State University. For more, visit cs.pdx.edu/~harry

[@giovannicarovanello62]

It is very unhappy to see people tease you about your name Professor. However I would like to thank you for posting these useful videos. Have a nice day.

[@ohhenno9651]

What a cool name!

[@michaelw3571]

Thank you for this series, Professor Porter.
I'm a CS Junior at university, and all my classes conveniently omitted going into any detail about caches, but used them extensively. I gained tremendous benefit from your clear and complete videos. Thank you so much!

[@squigglyblue7377]

Thank you for posting this video. That was very cache-money of you.

[@aslam4dm]

You're a wizard Harry!

[@princeofexcess]

I watched all the lectures but what I needed for my exam starts on lecture 5. If youre CSU SM student might as well skip to that lecture.
Great lectures!

[@carloscalage1234]

Harry Porter you just blew my mind with this magical lecture, thank you!!

[@ythien7147]

Thanks Professor Harry Porter. I am CS student. Your videos are really helpful.

[@user-mp3wv2zy5n]

Thank you for the awesome videos on the CPU cache mechanism, professor Porter!

[@lecongminh3]

I wish I had you as my professor back in college. I love your way of explaining things. It's so much easy to understand. Thank you prof. Porter

[@poolmorosanacona1930]

Great video series! Thank you, I've learned a lot.

[@carljohnson7342]

Dear professor thanks a lot.

[@BARaaz04]

Thanks, great explanation.

[@eldarzakirov5571]

Hello, thanks a lot for great explanation!

[@miscellaniousnothing]

Thanks for your videos so good 💯💯

[@user-lb1fl7sh8m]

videos about virtual memory?

[@khubaibmohammad9133]

awesome lecture thanks sir

[@tessouhchaima2415]

Good work .. thank you sir

[@Josher1498]

Thank you. Thumbs up.

[@user-rm2kq7lu6x]

Prof. Porter, this vid is missing in the playlist

[@hhp3]

Thank you for pointing this out. Not sure why it disappeared...it’s weird. Computers?!?! I believe I have fixed it. HHporter3 at gmail.

[@imadmb154]

you're a wizard harry

[@doniparthisaiteja8578]

thank you sir

[@RiaziMohandesi]

very useful, thank you sir. from Iran

[@ajkdrag]

You are the chosen one, Harry...

[@paul88146]

and this is why the university of Hogwarts is so prestigious

[@AnhTran-pv4ho]

You're awesome!

[@EpicEditsBySaz]

Oh man i bet this awesome Prof. doesn't hear the end of it with his name! lol. Wonder if he enjoys it or hates it..

[@hhp3]

Often my students call me “Prof Potter”. I instantly turn them into frogs.

[@hotmandead1]

Does the diagram used for cache setup for i7 also represent the intel core i5 setup as well or even the i3?

[@IIIIIIIIIIIllllllIIIIIIIIIII]

Yes. Only the difference in mb matters.

[@igormorozov6311]

Perfect

[@habiburrehman5567]

Thanks sir ☺

[@HassaanALal]

HARRY PORTERRR YOU ARE THE CHOSEN PROFESSOR

[@HOOHA333]

What are the reasons for L1 cache is faster than L2 cache ?

[@HOOHA333]

Why only we have two different cache for data and instruction for L1, but not for L1 and L3 ?

[@alaeddine5387]

thanks

[@HOOHA333]

Why L1 , L2 and L3 caches have different sizes and how sizes of caches are determined ?

[@spencerwhite3400]

I've only watched up to 4:06, so I'll delete this if you answer it. I forgot the name, but isn't there a system where you divide memory over multiple hard drives? Couldn't you do that with caches, having alot of them? I mean, obviously, you would need ALOT of them to come close to matching the size of the memory unit

[@HeshamSalehVEVO]

Caches are VERY expensive compared to Hard Drives, thats why its economically unfeasible to have a lot of caches.

[@HOOHA333]

So, why can not we make main memory faster, we can eliminate the need for cache.

[@aliadel1723]

you are awesome

[@PRATIK1900]

Yer a Wizard Harry....oh,maybe not....

[@nilusah4356]

Your videos make me understand in 10 minutes; however, I do not get what my professor teach me :(

[@deojeetsarkar2006]

I thought he would use his wand to teach.

[@ayushsrivastava5278]

really your name is harry porter!

[@davejs]

Harry Porter. lool

[@nstha8848]

+David Leger but the other one is Harry Potter !

[@xPinoyTribal]

Thanks Prof. Harry Potter

[@hussainawan6040]

how is wachting this video from aps attock

[@deojeetsarkar2006]

Hello, I am Ron, remember me?

[@RM-bs7sv]

H...Har...Harry Porter? LOL