problems of synchronization and communication in concurrent problem.?
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The solution depends on your particular situation. For example in Unix-like environments you can handle the communication with either pipes, sockets, shared memory, or files. The synchronization is handled by using semaphores, mutexes. The book Advanced Programming in the Unix Environment by Richard Stevens has a great treatment of each of these issues.\n\nIn general you want to protect any data-structure that is both shared and subject to modification with a mutex or a semaphore. Mutexes are used when only one thread/process should access the structure at a time. Semaphores can do this too, but they also allow you to grant multiple accesses  for things like buffers.\n\nAdditionally specific libraries and systems also provide some additional feaures. The pthreads specification/library has a notion of signaling, so you can have threads/processes block waiting for a condition to be "signaled" by another before proceeding with an operation.\n\nFinally some languages have added support for concurrent programming. Ada, C#, and Java all provide language level constructs that you can used to insulted yourself from the details of how synchronized access to data-structures is accomplished. For example C# provides the lock {  <STATEMENT>+ } construct to execute a set of statements atomically. Java provides the "synchronized" keyword that can be applied to a method that should be executed atomically.
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1. To occur at the same time; be simultaneous\n2. To operate in unison. \n\nSynchronization is the coordination of occurrences to operate in unison with respect to time. This process can be a premeditated arrangement set forth on a parallel time scape, or it can be an observable coincidence in eventuality.
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I can provide you complete programs of data structures (linked list, array handling, stacks, queues, tress, graphs, and other algorithms). for this you have to provide me your information and details for what purpose you have to use this? and what your are doing currently. you can communicate me on my email address. abhi_patni@yahoo.com.
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One finds clear parallelism between.
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communication problems or clashing of ideas
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Pick a simple language like Java to get your feet wet study up on threading and synchronization. I've included a decent link in my sources to educate you.  Once you've mastered that move on to the IEEE studies, look up Grid Computing, read about Blue Gene etc.
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Deadlocks are ignored by linux OS\n\nThis link will clarify your doubts and give more information\n\nhttp://www.kernel.org/hg/linux-2.6/?cl=26693\n\nhttp://www.linuxlinks.com/Java/JVM/\n\nhttp://linux.sys-con.com/read/36108.htm
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lack of communication
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I think GoodSync would solve your Problem.\n\nhttp://www.goodsync.com/\n\nAnd you may also consider reading this article
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sender , message , channel , receiver
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Go programming... Sounds like its easier to get things going. Networking has programming and data communication type issues.
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false\nonly when the system has no solution, will the graphs be parallel
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Use SWT, they are already multithreaded and with ease you could do such thing.
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meeting of minds - a state of cooperation
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Your processor could have Hyperthreading enabled, which treats one processor as two, and helps speed up multitasking.\n\n\nps) What processor do you have?  Mine only shows one graph, and I know I don't have hyperthreading.  Is it a newer intel processor?
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From the following link, look for "Chapt22, Problem-24".\n\nThis problem is similar, except the speed is 10% instead of 11%. I'm sure you can use the same formulae though.\n\nhttp://www.jca.umbc.edu/~george/html/courses/phys112/2004fall/homework/04fall_phys112_hk8.pdf
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Consider an implementation of a mutex lock which\ndoes not allow "recursive" locking.  By that I mean,\nit is a simple implementation which just blocks\nif the lock is taken.\n\nThen consider a single threaded process which \naccesses some resource protected by the lock\n(thus acquiring the lock), and within the critical\nsection, it attempts to acquire the resource again.\nI would call this a single-thread deadlock.\n\nWhile that sounds quite unlikely, imagine that you\nwrote a library which implemented a single "I/O mutex"\nso that only a single thread at a time could be\nperforming I/O.  If your implementation was careless,\na single thread might acquire the lock calling the\nhigh-level function "fwrite()", and then attempt to\nacquire it again when entering the low-level\nfunction "write()" [which was used to implement\n"fwrite()"].