PPT-Caches P & H Chapter 5.1, 5.2 (except writes)

Performance CPU clock rates 02ns 2ns 5GHz500MHz Technology Capacity GB Latency Tape 1 TB 17 100s of seconds Disk 1 TB 08 Millions cycles ms SSD Flash 128GB 3 Thousands of cycles us. Although large caches can significantly improve performance they have the potential to increase power consumption As feature sizes shrink the dominant component of this power loss will be leakage However during a fixed period of time the activ ity i Write-back: snoop in caches to find most recent copy* Slide is partia Write-invalidate has emerged as the winner for the vast Because the bus and memory bandwidth is usually in demand, write-invalida caches and data caches are always identical in size or differ by a factor of 2X, but no more. The primary caches range from 8 KB to 128 KB with SA ranging from direct mapped to 8-way. Small instruct Brian K. BrayM. J. FlynnTechnical Report No. CSL-TR-91-470April 1991 Supported by NASA under NAG2-248 using facilities supplied under NAGW 419. WRITES CACHES AS AN ALTERNATIVETO WRITE BUFFERS bY Bri Chapter 09: Caches Chapter 09: Caches Schaum Monosyllable Poems Plath a wife who writes who writes you teach at Smith put words on page with rage at time when Ted strays strong words come pound thoughts to page when death chokes your words live Chapter 09: Caches Chapter 09: Caches Schaum Extending Lifetime in Resistive Memories . through Selective Slow Write Backs. Lunkai. Zhang, . Diana Franklin, Frederic T. Chong. 1. Brian Neely,. Dmitri . Strukov. ,. Yuan . Xie. An Everyday Experience:. Cache overview. 4 Hierarchy questions. More on Locality. Please bring these slides to the next lecture!. Projects 2 and 3. Regrade. issues for 3. Please resubmit and come to office hours with a diff.. and Engineering. Lecture 20: Snoopy Caches. Krste Asanovic. Electrical Engineering and Computer Sciences. University of California, Berkeley. http://www.eecs.berkeley.edu/~krste. http://inst.cs.berkeley.edu/~cs152 . Hakim Weatherspoon. CS 3410, Spring 2013. Computer Science. Cornell University. P & H Chapter . 5.2-3, 5.5. Goals for Today: caches. Writing . to the Cache. Write-through . vs. Write-back. Cache Parameter Tradeoffs. :. What is Cache Coherence?. When one Core writes to its own cache the other core gets to see it, when they read it out of its own cache.. Provides underlying guarantees for the programmer with respect to data validation.. CS 3410, Spring 2012. Computer Science. Cornell University. P & H Chapter . 5.2-3, 5.5. Goals for Today. Cache Parameter Tradeoffs. Cache Conscious Programming. Writing to the Cache. Write-through . CS 3410, Spring 2011. Computer Science. Cornell University. See P&H . 5.2 (writes), 5.3, 5.5. Announcements. HW3 available due . next. Tuesday . HW3 has been updated. . Use updated version.. Work with .