PPT-Memory Management

History Runtime management of dynamic memory is a necessary activity for modern programming languages Lisp of the 1960s was one of the first languages to incorporate automatic memory management. Avg Access Time 2 Tokens Number of Controllers Average Access Time clock cyles brPage 16br Number of Tokens vs Avg Access Time 9 Controllers Number of Tokens Average Access Time clock cycles brPage 17br brPage 18br channels Primary Storage today Primary Storage today Registers Registers Cache Memory Cache Memory Main storage RAM Main storage RAM Primary Storage Primary Storage Volatile storage Volatile storage A computer memory that requires A computer memory 4MB rdiskgz Com ressed Linux A pp lications 640K ffs2 Nonvolatile File System 7MB Uncompressed running Linux Kernel 1MB Free User Memory volatile 6MB Uncompressed running Linux Applications Root File System 2MB Scratch Pad File System Volatile File declarative memory Implicit vs Explicit memory What is amnesia TV movie of the week amnesia A person suffers a head injury They cannot remember who they are This is called retrograde amnesia Loss of information from before trauma Very rare Wh & Thought. By: Mirella Cabrera. Psychology. Ms. McElmoyl. Per.7. Storing and retrieving information that has been learned. It is known as a large filing cabinet with millions of files stored. It is stated in the Stroke Center, “Everything we experience is placed in a file, labeled and can be pulled out when needed.”. U . Wisc. and HP Labs. ISCA’13. Architecture Reading Club Summer'13. 1. Key points. Big memory workloads . Memcached. , databases, graph analysis . Analysis shows. TLB misses can account for . upto. IMPROVEMENT. Dennis . Kelly. , Ph.D., Neuropsychologist. Traumatic Brain Injury Program. Madigan Health Care System. Washington . TBI Conference. 28 April 2011. Sample Topics to be Covered. How does information get into memory?. Video: 60 Minutes segment (Part 1 only) - 13 min. www.cbsnews.com/video/watch/?id=7166313n&tag=contentMain;contentAux. OR. www.cbsnews.com/video/watch/?id=7166313n&tag=contentBody;housing. OR. An introduction. What have you forgotten?. 40. What does the number 40 have to do with memory?. Forgetting is normal. Why We Forget?. Inattention. -- distracted, poor encoding. Suggestion. -- we are influenced by other. Man Cao. Jake . Roemer. Aritra. . Sengupta. Michael D. Bond. 1. Parallel Programming is Hard. 2. Parallel Programming is Hard. Shared-memory. 3. Main Memory. CPU. Cache. CPU. Cache. CPU. Cache. CPU. Memory systems. Memory tasks. Terms. The Brain. Forgetting. Improving memory. The Three Processes of Memory. Encoding. Storage. Retrieval. (TOT). The Three Memory Systems. 1.Sensory memory . BYU CS 345. Memory Management. 2. CS 345. Stalling’s Chapter. #. Project. 1: Computer System Overview. 2: Operating System Overview. 4. P1:. Shell. 3: Process Description and Control. 4: Threads. 4. Managed jointly by CPU hardware and the operating system (OS). Programs share main memory. Each gets a private virtual address space holding its frequently used code and data. Protected from other programs. Background. Contiguous Memory Allocation. Paging. Structure of the Page Table. Swapping. Example: The Intel 32 and 64-bit Architectures. Example: ARMv8 Architecture. Objectives. To provide a detailed description of various ways of organizing memory hardware.