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Concurrency2019.html
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<p style="padding-bottom: 0pt; padding-top: 0pt; " class="paragraph_style_3">Many thanks to Silviu Craciunas for the photo (RTAS 2010 in Stockholm) and his help with iWeb!</p>
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<p style="padding-top: 0pt; " class="paragraph_style_4">Introduction to Concurrency Theory and Practice<br /></p>
<p class="paragraph_style_4">Summer semester 2018/2019<span class="style"> together with</span> <a title="http://cs.uni-salzburg.at/~ck/" href="http://cs.uni-salzburg.at/~ck/" class="style_1">Christoph Kirsch</a><br /></p>
<p class="paragraph_style_5"><span class="style_3">Schedule:</span> Mondays 11am-12noon, Tuesdays 1:30pm-3pm in T06<br /></p>
<p class="paragraph_style_5"><span class="style_4">see calendar</span> (newest schedule after the Easter break) <br /></p>
<p class="paragraph_style_5"><br /></p>
<p class="paragraph_style_5"><span class="style_3">First meeting:</span> <span style="line-height: 11px; " class="style_5"> </span>Tuesday, March 5 at 10pm in T04 (only the first week at 10am)<br /></p>
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<p style="padding-bottom: 0pt; " class="paragraph_style_5"><span class="style_3">Language:</span> English </p>
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<p style="padding-bottom: 0pt; padding-top: 0pt; " class="paragraph_style_6" id="id9">The course may also be taken by PhD students</p>
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<p style="padding-top: 0pt; " class="paragraph_style_7"><span style="line-height: 16px; " class="style_6">Literature: <br /></span></p>
<p class="paragraph_style_7"><br /></p>
<ol>
<li style="line-height: 16px; padding-left: 36px; text-indent: -25px; " class="full-width">
<p style="text-indent: -25px; " class="paragraph_style_8"><span style="color: rgb(147, 67, 106); font-size: 13px; opacity: 1.00; text-decoration: none; " class="Bullet">•</span><span style="width: 18px; " class="inline-block"></span>General Textbook: <a title="http://mitpress.mit.edu/catalog/item/default.asp?ttype=2&tid=3730" href="http://mitpress.mit.edu/catalog/item/default.asp?ttype=2&tid=3730">The Art of Multiprocessor Programming</a>, by <a title="http://www.cs.cmu.edu/~emc/" href="http://www.cs.cmu.edu/~emc/">Maurice Herlihy</a> and <a title="http://u.cs.biu.ac.il/~doronp/" href="http://u.cs.biu.ac.il/~doronp/">Nir Shavit</a>.<br /></p>
</li>
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<p class="paragraph_style_9"><br /></p>
<p class="paragraph_style_10">This book can serve as background information for some of the topics that we cover. <br /></p>
<p class="paragraph_style_10"><br /></p>
<p style="padding-bottom: 0pt; " class="paragraph_style_10">A list of papers will be added here, as we proceed with the course. </p>
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<p style="padding-bottom: 0pt; padding-top: 0pt; " class="paragraph_style_7"><span style="line-height: 16px; " class="style_6">Prerequisites: </span><span style="line-height: 16px; " class="style_7">No particular knowledge is expected that is beyond the bachelor study. You may need some basic notions of systems and theory, as well as programming in C++ for parts of the course.</span></p>
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<p style="padding-top: 0pt; " class="paragraph_style_7"><span style="line-height: 16px; " class="style_6">Exam: </span><span style="line-height: 16px; " class="style_7">This is a 2VO+1PS course. For the lectures part (VO), there will be three exam possibilities in June/July/August. The exam is written consisting of several questions / excersises from the material covered during the course. For the practical part (PS), there will be mini projects. <br /></span></p>
<p class="paragraph_style_7"><span style="line-height: 16px; " class="style_7"><br /></span></p>
<p class="paragraph_style_7"><span style="line-height: 16px; " class="style_7">In addition, we may give homework in class from time to time. This is to help you estimate your progress, and possibly provide you with feedback (if you hand in the homework for corrections). It is not obligatory to hand in homework.<br /></span></p>
<p class="paragraph_style_7"><span style="line-height: 16px; " class="style_7"><br /></span></p>
<p class="paragraph_style_7"><span style="line-height: 16px; " class="style_6">Exam dates: </span><span style="line-height: 16px; " class="style_8">t.b.a.</span><span style="line-height: 16px; " class="style_6"><br /></span></p>
<p class="paragraph_style_7"><span style="line-height: 16px; " class="style_6"><br /></span></p>
<p class="paragraph_style_7"><span style="line-height: 16px; " class="style_6">Mini projects: </span><span style="line-height: 16px; " class="style_8">t.b.a.</span><span style="line-height: 16px; " class="style_6"><br /></span></p>
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<p style="padding-top: 0pt; " class="paragraph_style_7"><span style="line-height: 16px; " class="style_6">Schedule: <br /></span></p>
<p class="paragraph_style_7"><span style="line-height: 16px; " class="style_6"><br /></span></p>
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<li style="line-height: 16px; padding-left: 36px; text-indent: -25px; " class="full-width">
<p style="text-indent: -25px; " class="paragraph_style_8"><span style="color: rgb(147, 67, 106); font-size: 13px; opacity: 1.00; text-decoration: none; " class="Bullet">•</span><span style="width: 18px; " class="inline-block"></span>Week 1, Tuesday 5.3.19, Introduction, discussion, planning -- a first meeting. We also already learned the basics of the semantics of concurrent objects, as well as the problems of interest in terms of performance and semantics, using overview tutorial <a title="http://cs.uni-salzburg.at/~anas/teaching/Concurrency/ICTP-intro.pdf" href="http://cs.uni-salzburg.at/~anas/teaching/Concurrency/ICTP-intro.pdf" class="style_9">slides</a>. Next time we will go into more details. <br /></p>
</li>
<li style="line-height: 16px; padding-left: 36px; text-indent: -25px; " class="full-width">
<p style="text-indent: -25px; " class="paragraph_style_8"><span style="color: rgb(147, 67, 106); font-size: 13px; opacity: 1.00; text-decoration: none; " class="Bullet">•</span><span style="width: 18px; " class="inline-block"></span>Week 2, Tuesday 12.3.19, Basic definitions, sequential specifications -- inductive and axiomatic (aspect-based) characterisations of the sequential specifications of stack, queue, and pool. I sent you my lecture notes via the ICTP Slack channel. <br /></p>
</li>
<li style="line-height: 16px; padding-left: 36px; text-indent: -25px; " class="full-width">
<p style="text-indent: -25px; " class="paragraph_style_8"><span style="color: rgb(147, 67, 106); font-size: 13px; opacity: 1.00; text-decoration: none; " class="Bullet">•</span><span style="width: 18px; " class="inline-block"></span>(No class on Tuesday 19.3.19 due to traveling.) <br /></p>
</li>
<li style="line-height: 16px; padding-left: 36px; text-indent: -25px; " class="full-width">
<p style="text-indent: -25px; " class="paragraph_style_8"><span style="color: rgb(147, 67, 106); font-size: 13px; opacity: 1.00; text-decoration: none; " class="Bullet">•</span><span style="width: 18px; " class="inline-block"></span>Week 3, Tuesday 26.3.19, more interesting properties of sequential specification and examples of specifications of data structures; basics needed for defining concurrent histories and behaviours as well as linearizability. I sent you my lecture notes via the ICTP Slack channel. <br /></p>
</li>
<li style="line-height: 16px; padding-left: 36px; text-indent: -25px; " class="full-width">
<p style="text-indent: -25px; " class="paragraph_style_8"><span style="color: rgb(147, 67, 106); font-size: 13px; opacity: 1.00; text-decoration: none; " class="Bullet">•</span><span style="width: 18px; " class="inline-block"></span>Week 4, Tuesday 2.4.19, we learned about quantitatively relaxed concurrent data structures -- in particular relaxing the sequential specification in a quantitatively controlled way. Basically we followed the details of <a title="http://cs.uni-salzburg.at/~anas/papers/popl2013.pdf" href="http://cs.uni-salzburg.at/~anas/papers/popl2013.pdf">this paper</a>, while proving also all simple properties and clarifying additional things. In the beginning we started with a high-level overview, given by these <a title="http://cs.uni-salzburg.at/~anas/teaching/Concurrency/Quantitative-relaxation-ICTP-course.pdf" href="http://cs.uni-salzburg.at/~anas/teaching/Concurrency/Quantitative-relaxation-ICTP-course.pdf" class="style_9">slides</a>. Here is also a version of the <a title="http://cs.uni-salzburg.at/~anas/teaching/Concurrency/Quantitative-relaxation-ICTP-course-all-stages.pdf" href="http://cs.uni-salzburg.at/~anas/teaching/Concurrency/Quantitative-relaxation-ICTP-course-all-stages.pdf" class="style_9">slides</a> with each stage of builds. I also already sent you my lecture notes in the slack channel.<br /></p>
</li>
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<p style="text-indent: -25px; " class="paragraph_style_8"><span style="color: rgb(147, 67, 106); font-size: 13px; opacity: 1.00; text-decoration: none; " class="Bullet">•</span><span style="width: 18px; " class="inline-block"></span>Week 5, Tuesday 9.4.19, we continued discussing quantitatively relaxed concurrent data structures -- with lot of details, proofs and examples. I already sent you my lecture notes in the slack channel.<br /></p>
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</ol>
<p class="paragraph_style_11"><br /></p>
<p class="paragraph_style_11">All classes in the first 5 weeks were taught by myself. We changed the schedule after the Easter break to Monday 11:15am-12noon and Tuesday 1:30-3 pm, always in T06.<br /></p>
<p class="paragraph_style_11"><br /></p>
<ol>
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<p style="text-indent: -25px; " class="paragraph_style_8"><span style="color: rgb(147, 67, 106); font-size: 13px; opacity: 1.00; text-decoration: none; " class="Bullet">•</span><span style="width: 18px; " class="inline-block"></span>Week 6, Monday 6.5.19 and Tuesday 7.5.19. The classes were taught by Christoph Kirsch. We discussed the layout of the machine that affects performance of concurrent programs: architecture, memory, caches, ... This part was a summary and repetition of basic systems facts related to programming concurrent programs, and particular facts about the architecture of our many-core machines. The students received simple programming homeworks that aim at creating worst-case performance scenarions.<br /></p>
</li>
</ol>
<p class="paragraph_style_11"><br /></p>
<p class="paragraph_style_11">Due to absence / illness of Christoph Kirsch, all the following classes were taught by myself (and some classes were cancelled when I was traveling).<br /></p>
<p class="paragraph_style_11"><br /></p>
<ol>
<li style="line-height: 16px; padding-left: 36px; text-indent: -25px; " class="full-width">
<p style="text-indent: -25px; " class="paragraph_style_8"><span style="color: rgb(147, 67, 106); font-size: 13px; opacity: 1.00; text-decoration: none; " class="Bullet">•</span><span style="width: 18px; " class="inline-block"></span>Week 7, Monday 13.5.19 and Tuesday 14.5.19. We returned to the discussion of consistency conditions, linearizability, sequential consistency, and started also with an overview presentation of local linearizability. We used the following <a title="http://cs.uni-salzburg.at/~anas/teaching/Concurrency/LL-ICTP-course.pdf" href="http://cs.uni-salzburg.at/~anas/teaching/Concurrency/LL-ICTP-course.pdf" class="style_9">slides</a>. Here is also a version of the <a title="http://cs.uni-salzburg.at/~anas/teaching/Concurrency/LL-ICTP-course-all-stages.pdf" href="http://cs.uni-salzburg.at/~anas/teaching/Concurrency/LL-ICTP-course-all-stages.pdf" class="style_9">slides</a> with each stage of builds.<br /></p>
</li>
<li style="line-height: 16px; padding-left: 36px; text-indent: -25px; " class="full-width">
<p style="text-indent: -25px; " class="paragraph_style_8"><span style="color: rgb(147, 67, 106); font-size: 13px; opacity: 1.00; text-decoration: none; " class="Bullet">•</span><span style="width: 18px; " class="inline-block"></span>Week 8, Monday 20.5.19 and Tuesday 21.5.19. We discussed local linearizability in detail, with carefully stating all definitions and proving some important properties (like compositionality). Related to this, we also discussed compositionality in general and presented the nice proof of Herlihy&Wing for linearizability, as well the well-known example of sequential consistency not being compositional. I am sending you my notes from this and the previous week in the slack channel.<br /></p>
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<li style="line-height: 16px; padding-left: 36px; text-indent: -25px; " class="full-width">
<p style="text-indent: -25px; " class="paragraph_style_8"><span style="color: rgb(147, 67, 106); font-size: 13px; opacity: 1.00; text-decoration: none; " class="Bullet">•</span><span style="width: 18px; " class="inline-block"></span>Week 9, (no class on Monday due to a meeting) Tuesday 28.5.19. We discussed the algorithms of many concurrent data structures, starting from the Michael-Scott queue and Treiber stack, to the relaxed versions: k-FIFO and k-Stack, distributed queues in different load-balancing scenarios, as well as the scheme of designing locally-linearizable implementations.<br /></p>
</li>
<li style="line-height: 16px; padding-left: 36px; text-indent: -25px; " class="full-width">
<p style="text-indent: -25px; " class="paragraph_style_8"><span style="color: rgb(147, 67, 106); font-size: 13px; opacity: 1.00; text-decoration: none; " class="Bullet">•</span><span style="width: 18px; " class="inline-block"></span>(no class on Monday 3.6.19 and Tuesday 4.6.19 due to traveling)<br /></p>
</li>
<li style="line-height: 16px; padding-left: 36px; text-indent: -25px; " class="full-width">
<p style="text-indent: -25px; " class="paragraph_style_8"><span style="color: rgb(147, 67, 106); font-size: 13px; opacity: 1.00; text-decoration: none; " class="Bullet">•</span><span style="width: 18px; " class="inline-block"></span>(no class on Monday 10.6.19 and Tuesday 11.6.19 due to public holidays)<br /></p>
</li>
<li style="line-height: 16px; padding-left: 36px; text-indent: -25px; " class="full-width">
<p style="text-indent: -25px; " class="paragraph_style_8"><span style="color: rgb(147, 67, 106); font-size: 13px; opacity: 1.00; text-decoration: none; " class="Bullet">•</span><span style="width: 18px; " class="inline-block"></span>Week 10, Monday 17.6.19 and Tuesday 18.6.19. <br /></p>
</li>
<li style="line-height: 16px; padding-left: 36px; text-indent: -25px; " class="full-width">
<p style="padding-bottom: 0pt; text-indent: -25px; " class="paragraph_style_8"><span style="color: rgb(147, 67, 106); font-size: 13px; opacity: 1.00; text-decoration: none; " class="Bullet">•</span><span style="width: 18px; " class="inline-block"></span>(no class on Monday 24.6.19 and Tuesday 25.6.19 due to traveling)</p>
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<p style="padding-top: 0pt; " class="paragraph_style_5"><span class="style_3">Course description: </span>This is a course on Semantics of Concurrent Programs. We will cover both theoretical aspects -- ways of defining semantics, some reasoning about correctness; and practical aspects -- concurrent programing and in particular programming concurrent data structures. <br /></p>
<p class="paragraph_style_5"><br /></p>
<p class="paragraph_style_5">Our group has made significant contributions on efficient scalable data structures in the last decade, we have gathered a large body of knowledge as well as implemented a benchmarking environment and data structure implementations that are very much worth exploring, enhancing, and further studying. <br /></p>
<p class="paragraph_style_5"><br /></p>
<p class="paragraph_style_5">The aim of this course is to introduce the existing area of concurrency to Master (or PhD) students that might be interested in either getting acquainted with programming concurrent objects, or even exploring related research topics in concurrency theory or concurrency in practice.<br /></p>
<p class="paragraph_style_5"><br /></p>
<p style="padding-bottom: 0pt; " class="paragraph_style_5">The student will implement small concurrent objects -- especially in the exercise part of the course -- and/or experiment with these or existing implementations that are part of our evaluation framework.</p>
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<p style="padding-top: 0pt; " class="paragraph_style_12">Ana Sokolova <br /></p>
<p class="paragraph_style_13">Dr. TU Eindhoven, The Netherlands, 2005<br /></p>
<p class="paragraph_style_13"><br /><br /></p>
<p class="paragraph_style_1">Associate Professor<span class="style_10"><br /></span></p>
<p class="paragraph_style_14"><span class="style_10"><br /></span><a title="http://cs.uni-salzburg.at/~ck/" href="http://cs.uni-salzburg.at/~ck/">Computational Systems Group</a><span class="style_10"><br /></span></p>
<p class="paragraph_style_14"><a title="http://www.cosy.sbg.ac.at/" href="http://www.cosy.sbg.ac.at/">Department of Computer Sciences</a><span class="style_10"><br /></span></p>
<p class="paragraph_style_14"><a title="http://www.uni-salzburg.at" href="http://www.uni-salzburg.at">University of Salzburg</a><span class="style_10"><br /></span></p>
<p class="paragraph_style_1">Austria<br /></p>
<p style="padding-bottom: 0pt; " class="paragraph_style_1"><br /><a title="mailto:[email protected]" href="mailto:[email protected]">[email protected]</a> </p>
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