Extra Points

• Security
• The objective of computer security includes protection of information and property from theft, corruption, or natural disaster, while allowing the information and property to remain accessible and productive to its intended users.
• Source
• Any thing of place from which something comes or is obtained, origin.
• Broadcast
• Refers to a method of transferring a message to all recipients simultaneously.
• Frame
• Is a digital data transmission unit or data packet that includes frame synchronization, for example, a sequence of bits or symbols making it possible for the receiver to dectect the beginning and end of the packet in the stream of symbols or bits.
• Update
• To bring up to date information.

Extra points

• Trajectory
• A trajectory is the path that a moving object follows through space as a function of time.
• Configuration
• A configuration is an arrangement of functional units according to their nature, number, and chief characteristics.
• Net
• Is a collection of hardware components and computers interconnected by communication channels that allow sharing of resources and information.
• Automatic
• Working by itself with little or no direct human control.
• Behavior
• Refers to the actions and mannerisms made by organisms, systems, or artificial entities in conjunction with their environment, which includes the other systems or organisms around as well as the physical environment.
• Extension
• A filename extension is a suffix (separated from the basefilename by a dot) to the name of a computer file applied to indicate the encoding (file format) of its contents or usage. Examples of filename extensions are .png, .exe, .dmg and .txt
• Sequence
• In mathematics, a sequence is an ordered list of objects (or events). Like a set, it contains members (also called elements or terms), and the number of terms (possibly infinite) is called the length of the sequence. Unlike a set, order matters, and exactly the same elements can appear multiple times at different positions in the sequence.
• Convention
• a way in which something is usually done.
• Sudo
• Sudo is a program for Unix-like computer operating systems that allows users to run programs with the security privileges of another user

Parallel Computer Memory Architectures [Lab]

As all of my class know that traditionally, software has been code for sequential computation, so they can only be run on a single computer having only one CPU and instructions are executed one by one. In parallel computing, you can make code for simultaneous computation, so yo can run using multiple CPUs and instructions can be executed simultaneously on different CPUs.


One topic that i think it is important is know about different memory architectures on parallel computing, so, i make a concept map for see more clearly differences between memory architectures.

Shared Memory
Advantages:

• We can have more friendly programming because we have a global address space.
• We have a fast and uniform data sharing because we have close memory to CPU.

Disadvantages:

• We don't have many scalability between memory and CPUs, because adding more CPUs increases traffic on the shared memory to CPU, so, it is not ability to be enlarged.
• We have a responsability for synchronization correctly access to memory.
• It is more expensive for design and produce

Distributed Memory
Advantages:

• We can have more scalability between memory and CPUs, increase processors and size of memory it is proportionately.
• We have rapidly access memory for each processor because is own, without interference and without overhead.
• it is not expensive than shared memory because uses commodity and networking.

Disadvantages:

• We need to have resposability for many details for data communication between processors.
• it is difficult to map existing data structures which are based by global memory.
• Don't have uniform times of memory access