(PDF) Optimized Virtual Channel Assignment in...
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11.41Google Inc.The Cray XT is an MPP system that scales up to 32K nodes using a bidirectional 3-dimensional torus intercon-nection network. Four virtual channels are used to provide point-to-point flow control and deadlock avoidance. Us-ing virtual channels avoids unnecessary head-of-line (HoL) blocking for different network traffic flows, however, the extent to which virtual channels improves network utiliza-tion depends on the distribution of packets among the vir-tual channels. This paper investigates the virtual channel balance—relative traffic carried on each virtual channel– and its importance on network utilization. We discuss the routing algorithm and use of virtual channel datelines to avoid deadlocks around the torus links, and heuristics to balance the packet load across the virtual channels. We present network performance results from an 11×12×16 3D torus network.Discover the world's research15+ million members118+ million publications700k+ research projects
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Conference PaperMay 2011ArticleJun 2012Project[...]ProjectProjectProjectArticleMay 2010DEFINITION The Cray XT4 system is a distributed memory multiprocessor combining an aggressive superscalar proces-sor (AMD64) with a bandwidth-rich 3-D torus interconnection network that scales up to 32K processing nodes. This chapter provides an overview of the Cray XT4 system architecture and a detailed discussion of its interconnection network. DISCUSSION The physical sciences are... [Show full abstract]ArticleDecember 0002As applications scale to increasingly large processor counts, the interconnection network is frequently the limiting factor in application performance. In order to achieve application scalability, the interconnect must maintain high bandwidth while minimizing variation in packet latency. As the offered load in the network increases with growing problem sizes and processor counts, so does the... [Show full abstract]Conference PaperJanuary 2007BookMarch 2011 · Datacenter networks provide the communication substrate for large parallel computer systems that form the ecosystem for high performance computing (HPC) systems and modern Internet applications. The design of new datacenter networks is motivated by an array of applications ranging from communication intensive climatology, complex material simulations and molecular dynamics to such Internet... [Show full abstract]Last Updated: 01 Aug 18Journal list menu
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LeBron gets in his first workout as a Laker0:44Ryan Clark breaks down the Newton-Benjamin confrontation1:33It's not too late to play!Fantasy footballShanna Lockwood-USA TODAY SportsOur panel of fantasy football analysts offers surprise performers, disappointments and those who will take their game to another level. On This Date: Aug. 10, 19861:06Dueling throughout their careers, Magic Johnson and Larry Bird teamed up for the first time as pros in a charity game on August 10, 1986. Pro sports expansionsGlenn HarveyMajor League Baseball is among the pro sports leagues talking expansion. Here's how every North American league could broaden its geography. Elite freshmenBrian Spurlock/USA TODAY SportsSay goodbye to Deandre Ayton and Trae Young. Say hello to Zion Williamson, R.J. Barrett and Nassir Little and the next wave of highlight-reel freshmen. Get the best of ESPN sent to your inbox ESPN Daily delivers the biggest sports news and moments every weekday.Sign me up!Email:
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To help make this website better, to improve and personalize your experience and for advertising purposes, are you happy to accept cookies and other technologies?Mr and Mrs King have two children , Jim and Liz. The whole family are all busy, so they often leave notes to each other, Read these four notes of today and know something about them. Note 1 3.30 p.m. 题目和参考答案——精英家教网——
暑假天气热？在家里学北京名师课程，
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Mr and Mrs King have two children , Jim and Liz. The whole family are all busy, so they often leave notes to each other, Read these four notes of today and know something about them.
Note 1 3.30 p.m.
To dad and mum, Mr Brown rang. No football practice today. I’m going to Tom’s house to plan our project and be back at 5.00 p.m. Liz Note 2 4.00 p.m To Liz,
It’s your turn to walk the dog. I have to do my homework after school. Remember to play with Teddy when you get home.
Note 3 6.45 p.m.
Has anyone seen my tennis shoes ? I’m in my bedroom doing my homework, and I need to wear them tomorrow.
Jim Note 4 10.00 p.m.
I saw your tennis shoes this morning . They smelt terrible so I put them outside the back door. Good night, dears.
Mum 49. Liz will be back home at ______.
A. 3.30.p.m.&&& B. 4.00 p.m.&&& C. 5.00 p.m.&&& D. 10.00 p. m.
50. ______ should walk the dog today.
A. Liz&&&&&& B. Mrs king&&&&& C. Jim&&&&& D. Mr Brown&
51. Jim was ______ at 6.50 p.m.
A. practicing football&& B. going to Tom’s house&&& C. playing tennis&&&& D. doing his homework 52. Jim can find his tennis shoes _______. A. in his bedroom&&& B. outside the back door&&&& C. in the living room&&&&&&&& D. at Tom’s house&&&&&&&&&&&&&
练习册系列答案
科目：高中英语
&Some friends tried to settle the quarrel between Mr and Mrs Smith without hurting the feeling of _______, but failed. A. none&&&&&&&&&&&&&&&& B. either& C. all&&&&&&&&&&&&&&&&&&&&&& D. neither
科目：高中英语
Mr and Mrs Scott prefer a restaurant in a small town to　　 &in so large a city New York. A.this　　　　　　B.one　　　　　C.it　　　　　　D.that
科目：高中英语
来源：2012年北师大版高中英语必修一Unit9练习卷（解析版）
题型：信息匹配
&阅读下面相关信息介绍，并按照要求匹配信息。首先请阅读下面的旅游路线信息。Here is a selection of the tours organizedfor the coming year.A.&8 days mountaineering trip ---climb Yunnan’s third highest peak, the Haba snow mountain. This is ideal forpeople loving adventure. You need to be fit and healthy.B.&8 days cycling tour from QiaotouTown--- visit the spectacular Tiger Leaping Gorge. It is a leisurely toursuitable for anyone who is reasonably fit and healthy. No previous cyclingexperience is necessary and all our routes are on flat land.C.&8 days river rafting—white wateradventure on the Yangtze from the old town of Lijiang. This adults-only tour isexclusively for good swimmers, physically fit.D.&10 days rainforest trek--- spend 5days in the forest and meet the local people. This is a walking tour and noprevious experience is needed, just a curious mind and an interest intraditional cultures.E.&10 days horse trekking tour—visit authenticTibetan villages of Shangri-la. The ultimate horse-riding experience in aspectacular mountain environment. This trip is for confirmed riders only. Don’texpect three-star hotels on this tripF.&7 days camping--- backpacking isthe top activity at this camp, including classes in backpacking stoveoperation, back country first aid, water purification, and map and compassskills.请阅读下面有出游意向的人的要求，然后匹配出相应的路线。46. The Smiths: a family of four, includingparents, a sixteen-year-old son and a thirteen-year-old daughter, who arelooking for a fun holiday. All four are good riders.47. Mr. and Mrs. Green: a retired couplewho are reasonably fit and who want to find out more about ethnic minorities’cultures.48. A group of four young adults: they areinto all extreme sports and looking for something with plenty of excitement.They are more interested in the scenery than in the life of the locals.49. The Simpsons: a family of fiveincluding a ten-year-old girl. They have many different interests and they arelooking for a relaxing holiday.50. Robert and Lisa: a honeymoon couple whowant the holiday of a lifetime. They are both sporty types and love watersports.人名&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&路线46 .TheSmiths&&&&&&&&&&&&&&&&&&&&&&&&&A. 8 days mountaineering trip47 .Mr. and Mrs.Green&&&&&&&&&&&&&&B. 8 days cycling tour from Qiaotou Town48. A group of four youngadults&&&&&&&& C. 8 days river rafting49. TheSimpsons&&&&&&&&&&&&&&&&&&&&D. 10 days rainforest trek50. Robert andLisa&&&&&&&&&&&&&&&&&&&E. 10 days horse trekking tourF. 7 days camping&
科目：高中英语
来源：2015届广东省阳东一中高一上学期联考英语试卷（解析版）
题型：信息匹配
阅读下列应用文及相关信息，并按照要求匹配信息。A. China's best tourist attractions are spread outacross the country. So how can you pick which one to go to? You don't have tomake a tough decision, just head to the Chinese Folk Culture Village nearShenzhen. Here you can see miniatures（缩影）of almostall of the major tourist at tractions in China.B. Hawaii Volcanoes National Park, containing morethan 218,000 acres, is open daily and offers guided tours and more. It has boththe world's most massive volcano（火山）and theworld's most active volcano. It also offers the best place to view thebeautiful sunrise and sun sets sceneries.C. Crete, a small island in Greece, is not tooromantic, but in terms of history and variety it has more to offer and fewertourists than any of the others. You can relax on the beach and enjoy thesunshine comfortably. D. Beijing Botanical（植物的）Garden is home to more than 1.5 million plants that belong to over 10,000species. It’s a botanical research laboratory as well as a place for the publicto enrich their knowledge about plants, enjoy the scenery and relax.E. Traveling in Thailand is as much enjoyable as it istiring because Thailand has lots of places to visit, lots of nice people tomeet, lots of uniqueness, lots of activities and of course lots of newexperiences and moments to capture. F. India is actually& a ‘Jewel in the Crown’ asfar as tourism is concerned. India is a vast country with people of manydifferent ethnic（种族的）backgrounds, religions, customs, languagesand lifestyles.现在，请阅读下面信息，根据他们的实际情况，进行信息匹配。1.Arthur is a college student who majors in geography（地理）and wants to admire wonders of nature in the worldthis summer vacation.2.Walrus is from France. He’d like a trip to live in a&third-world& place for a month to experience the different localcustoms and lifestyles from Europe. 3.Garry and Peter, quite outgoing, have a wide range ofinterests，enjoy mixing and a wide variety ofamusements. They want to a place that is very popular and fashionable（时尚的）this summer.4.Cindy is very interested in Chinese tourist&attractions and wants to experience Chinese culture, but the time is toolimited for her. It’s only about a week before she leaves China.5.Mr. and Mrs. Hunter are looking for a beach-basedholiday in southern Europe, to a quiet beach location where there are not toomany tourists.&
科目：高中英语
来源：学年北京市高三上学期期中考试英语卷
题型：单项填空
—We really enjoyed ourselves atthe party. Thanks again, Mr. and Mrs. White.　　　　—_____.Just drop in whenever you feel like it.　　A.With pleasure 　　　　　　　　B. Our great honour　　C.Nice having you here　　　　　D. Nice you are here&
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