Ignore:
Timestamp:
Aug 5, 2022, 4:20:16 PM (2 years ago)
Author:
Thierry Delisle <tdelisle@…>
Branches:
ADT, ast-experimental, master, pthread-emulation
Children:
181036c
Parents:
8040286 (diff), 878be178 (diff)
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Message:

Merge branch 'master' of plg.uwaterloo.ca:software/cfa/cfa-cc

File:
1 edited

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  • doc/theses/thierry_delisle_PhD/thesis/text/front.tex

    r8040286 r62c5a55  
    129129which begs of the question of how many kernel threads are needed and should the number be dynamically reevaluated.
    130130Furthermore, scheduling must prevent kernel threads from blocking, otherwise user-thread parallelism drops.
    131 When user-threading parallelism does drop, how and when should idle kernel-threads be put to sleep to avoid wasted CPU resources.
     131When user-threading parallelism does drop, how and when should idle kernel-threads be put to sleep to avoid wasting CPU resources.
    132132Finally, the scheduling system must provide fairness to prevent a user thread from monopolizing a kernel thread;
    133133otherwise other user threads can experience short/long term starvation or kernel threads can deadlock waiting for events to occur on busy kernel threads.
    … …  
    138138Fairness is handled through preemption and/or ad-hoc solutions, which leads to coarse-grained fairness with some pathological cases.
    139139
    140 After testing and selecting specific approaches to these scheduling issues, a complete implementation was created and tested in the \CFA (C-for-all) runtime system.
     140After examining, selecting and testing specific approaches to these scheduling issues, a complete implementation was created and tested in the \CFA (C-for-all) runtime system.
    141141\CFA is a modern extension of C using user-level threading as its fundamental threading model.
    142142As one of its primary goals, \CFA aims to offer increased safety and productivity without sacrificing performance.
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