Amazing Lectures!!! Thank you for making it public. Hope some day will listen to your live lecture and Interact with you
@thyagtubes4 жыл бұрын
Lecture starts at 9:04
@ilyasgaripov36865 жыл бұрын
Very helpful, thank you
@calengr17 жыл бұрын
main memory starts at 7 40
@ankitvashishtha74107 жыл бұрын
Hi Prof. Onur Mutlu, All the facts beautifully explained. Hats Off! Thanks for the lectures. Now, I have two doubts, first how memory controller is selecting the rank no. from given address? You have shown only row, channel. & column selection from a coming address) ( Time : 1:19:22 - kzbin.info/www/bejne/f4bOaqJvrNuLZ7s ) Second doubt: Do you have any video explaining the Memory Controller & PHY interconnection with working with DRAM Chip. How different timing signals like DQS etc work together? If yes please share the link.
@noahgoldstein39512 жыл бұрын
If you pipeline subarray access in banks won't you essentially end up thrashing the global row-buffer? Seems like this will increase the frequency of precharging (and then power consumption AFAICT).
@PrinceKumar-bi6vq8 жыл бұрын
In THREAD CLUSTERING MEMORY SCHEDULING My doubts are - 1. Which threads are you refering here ? Is it hardware thread or kernel/user thread? 2. How does memory controller gets the information related to thread?
@CMUCompArch7 жыл бұрын
1. It is hardware threads. More specifically, hardware context ID. 2. The hardware context ID is communicated with each request to the memory controller. I would suggest reading earlier works on the topic of thread-aware memory scheduling, which cover such information in more detail: Mutlu and Moscibroda, "Stall-Time Fair Memory Access Scheduling for Chip Multiprocessors", MICRO 2007. people.inf.ethz.ch/omutlu/pub/stfm_micro07.pdf Mutlu and Moscibroda, "Parallelism-Aware Batch Scheduling: Enhancing both Performance and Fairness of Shared DRAM Systems", ISCA 2008. people.inf.ethz.ch/omutlu/pub/parbs_isca08.pdf
@hrqasim6 жыл бұрын
I don't get the point that each column gives 8 bits?? Column decoder is also a mux which selects one of the bits in row buffer??
@sujayyadalam98426 жыл бұрын
A single row buffer consists of multiple bytes. For example, you can have a DRAM with 8kB row buffers. The column decoder is used to select the block (again block size can be different, for example 64 bytes) in the row.
@zaferesen12536 жыл бұрын
I think in the images it is abstracted to show a single bit; but under the hood, the columns actually consist of 8 stacked memory cells (connected to the same row-column intersection).