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58 Threads found on edaboard.com: Virtual Memory
Hi guys, I have read about how Linux kernel manages memory itself and figure out that it uses virtual Address. To transform from virtual Address to Physical Address it uses PAGE TABLE. But, where is PAGE TABLE stored? I have already found some articles in Internet taking about this problem but have not had any answers make me feel (...)
Does the i7 have sufficient ram? Meager ram results in excess hard disk activity, swapping of virtual memory, page file, etc. The i7 might be running tasks in the background, slowing it down. Open Task Manager (ctrl-alt-del). Examine the list of applications and processes which are running. Look for any that do not seem as though they belong. Admi
A runaway process can consume enormous ram, and then start to grab hd space as virtual memory. Call up Task Manager (ctrl-alt-delete). Look at the list of processes and applications. See if one occupies too much memory. See if any programs appear as though they do not belong. One could be a virus or malware. Some processes have odd names. (...)
Hi all, I would like to simulate a patch antenna array on a conical structure but I received the message "solver out of memory". Ok no problem, I extended the virtual memory from 1Go to 50Go to be sure, but the problem is the same, at the same moment of the simulation. Does HFSS consider the virtual (...)
There's a relation to a PC's virtual memory in so far that it also depends on a MMU. In case of the memory pages swapped to disk, the memory managment unit detects the intended virtual memory access and reloads the memory content before program execution can continue.
Most microprocessors/controllers have an instruction like 'compare' CPxxx in the instruction set. Depending on how advanced the micro, is you can compsre Registers, memory locations and constants. This instruction is in reallity a virtual subtraction, not changing the contents of any Registers or memory positions.
Been there.. But never tried it seems no delta on estimate just polarity. To converge the estimate STEP SIZE is incremented each time. seems like a simple but slow method but resilient like dynamic RAM virtual memory size reserve estimates.... Adapt
The "in-system memory content editor" hasn't to do with init file functionality. The init file loads the RAM content from configuration bit stream at boot time. The content editor is an IP block that connects one port of a dual port RAM to the virtual JTAG hub. Starting with Quartus 13, Altera has introduced a feature to drive the virtual (...)
if you do a web search on vmware vers virtualbox you will get plenty of links I have run virtualbox for years - mainly on l Win7 PCs with WinXX, Win7, Linux, etc in virtualbox You can instal what software you need as with a non virtual operating system (assuming you give the virtual machine sufficent (...)
Can you please correct me , if the details which i have mentioned below are wrong EXAMPLE: without virtual class A ; task disp (); $display(" This is class A "); endtask endclass class B extends A ; task disp (); $display(" This is Extended class A "); endtask endclass program main ; B B1; //Handle B1 is declared for
Dear friends, I have an Windows XP Laptop, in which is already installed the QT Creator 4.x. However, the target application must run at Linux Ubuntu embedded system, but I´m suffering to achieve the proper cross-compilation setup. So, despite my Laptop have no much hardware resources ( memory, HD ) I´m willin
hi i was trying to do an EM simulation in Agilent ADS Momemntum. After like 50 minutes it gave a warning and stopped. I have 2GB RAM, Core2Duo-2.2GHz. ERROR : memory allocation failure, no more virtual memory available! ------------------- Momentum --------------------- Version: Momentum MomEngine 8.40.075 (*) 350.500 Feb
Lvs virtual connect name vddd gndd The above statement is needed in your run.
you can only use Solaris x86 from oracle. also, you can run it through virtual machine like VMware. I'm using solaris10.
Hello saochandan: In a simple language this is table which has entry of virtual address, physical address, size and access attributes. So in one entry it includes all these four elements. virtual Address | Physical Address | Size| Access Attributes For example: 0x20000000 is vritual address, 0x20000000 is physical address 0100B , size is spec
Hi I decide to use FT245RL from FTDI to transfer about 500 MB from PC to a embedded Flash memory. As mentioned in datasheet it can transfer up to 1MB/s . For using this transfer speed can i use VCP (virtual COM Port) driver or should i use D2XX driver ? Is there any speed limit for COM port ? Thanks for your support.
hi there, i have a cpu and a fpga(Spartan 6) in board. im gonna write and read fpga address data through EBI. is it possible and how? let's say im gonna write "0xFFFF" to address of 0xE0300000. in linux, i came with some results that we can implement it by using ioremap() which converts physical memory to virtual but im not able to do it
Hello experts, This question is not directly related to VLSI or ASIC design. I was reading about cache memory and virtual memory and I need to know how CPU performs memory utilization using both the memories. I know the concepts of both but I am more interested in knowing the relation between the 2 memories. Do CPU (...)
Segmentation violation usually also means "short of memory" (data segment runs into code segment). Try to spend more memory -- if only virtual memory -- for your sim. process!
Looks like the Java virtual Machine (JVM) wasn't allocated enough memory to perform the matching process. The Power*MatchMaker stores the match data in memory, so if you have a lot of duplicates, then it can fill up memory quickly. You can read this thread to see our justification for doing most of the work in (...)
I have three Hardisks attached too my system then virtual drives altogether consumes 26 Drive letters .When I connect USB card reader My card is not detected how to solve the problem
These are additional hardware either externally or incorporated within a controller to enhance the speed of operation There are modules like DMA controller, Cache memory(virtual), MAM (memory accelerator modules) etc. they are used to increase the overall system speed
1. The problem statement, all variables and given/known data A virtual memory system has a page size of 512 bytes, seven virtual pages, and four physical page frames. The page table is as follows: VPN.........PFN 0..............2 1..............0 2..............- 3..............1 4..............3 5..............- 6..............- (...)
Hardware accelerator are devices used along with controller to speed up the overall execution speed. E.g DMA(direct memory access) Usage of cpu and FPU in a single controller. Any accelerator in the form of co-processor, DSP etc. Emulators An emulator is a virtual-copy of a physical device. They are used as substitute of the original hardware th
Hi all, is there a way to tell CST Studio how much memory he can use? I'd like to reserve some for computer basic services; despite my RAM is 16 GB I ended up to virtual memory...
I know we have a page table to convert virtual address to real physical address. Now we have a CPU executing instructctions and reading and writing data into memory. This Data can be in Caches, or in main memory. What address does the CPU see when it writes into Caches or Main memory. Does it see the (...)
Does nucleus support processes and process management? Does it support virtual memory creation/allocation?
Hello, Its a problem of small number of OFDM symbols or small bit stream you are performing your simulation on. In case of your virtual memory not capable of carrying larger streams so, you can run your curve over a larger number of runs to take average.
Hi, I think it happens when the virtual memory is too low. Have you ran the CST in same machine in past? If not may be then its god idea to reinstall it again.
Hi when i run optimization simulation with 66 optimization parameters i get the following message: your system is low on virtual memory What does this message mean? what do i do? thanks
When you run 32bit software on a 64bit MS operating system, it runs in a virtual 32bit machine. MS calls the virtual machine WOW64 (Windows on Windows64). It doesn't matter how much memory you have installed, you can only use 4Gb when running a 32bit program (2E32 = 4.295E9). Out of that 4GB memory space, you have to (...)
Hello, I'm afraid it is not possible to directly access the signals of the DDR SDRAM. Usually, if we are speaking about standard x86 technology, the memory is connected to a MCU (memory management unit) that is either integrated on the CPU (AMD), or on the Nordbridge of the chip-set (Intel). The MCU basically maps the virtual (...)
Hello! somebody told me that VMWARE can be used in Windows-based platform to have virtual unix machine. may somebody explain how it works and how efficient it is? thanks...
it means u have reached the maximum allocated virtual memory on your hard disk, to increase it go to the help of your operationg system and search for "virtual memory" and there u will find how to increse it. another thing is the fact that your system require virtual memory means it (...)
Can Artisan SRAM Generator for TSMC be run under Solaris of the virtual Machine(just like VMWare)? as i know it is only for Solaris or HP-Unix, but i don't have the hardware platform of Sun Workstation or HP-Unix.
hi when I tried to initialize my board which contain a xc18v04 PROM and a XCs10 in boundary scan mode the following error encountered: EROR: Portability:3- this xilinx application has run out of memory or has encountered a memory conflict. Current memory usage is 2086780 kb. ... my ram is 1GB an also 2GB virtual (...)
how to map virtual memory into physical memory using C
it occured to me that to find out I could run emulators of each other an run a commun program , ok why not run the same MATLAB version and demo under virtual PC for MAC an later run an MAC Os X 10.3 emulator running in a PC .. Both machines have to have similar frequency CPUs and 512 megs of memory.. i will do this pretty SOON ..but i'm
hi, i just had the same problem . i had matrix of 1040X72000 of double type. i did tree things: 1. increase the virtual memory page size. (from the control panel->system->advanced->performance->setting. 2. clear all unwanted variale in matlab 3. executing the command:"pack". if that isn't helping try close all wante
obviously the faster the processor, the faster the EM solver will be for problems that are not RAM-constrained. The advantage of adding more RAM is that it avoids swapping to hard disk (virtual memory) which is much slower. HFSS can access up to 3 GB of RAM on XP, and I would put as much as you can afford into any PC dedicated to EM analysis.
1. Difference between thread and process, and the adv of threads? 2. Working of virtual memory? 3. Explain COM? 4. Difference between loading and linking? 5. What is marshaling? How does WIN NT supports multitasking?
Hi, I'm using Matlab R14, SP1. When I start Windows, the Matlab.exe process runs also. What does this process does? Why shouldn't I terminate this one? (See ) This process uses up to 50Mb of virtual memory and 40 of memory. Please answer, thanks
I have strange behaviour with my hardware. When I configure MMU to map direct 1:1 some memory space (this is simplified solution), just after enabling MMU I got Machine Exception. Under debuger when I look into memory (virtual memory adres != real memory adres) I seems to be MMU working, so I assume MMU and (...)
Hi jeanne In order to determine the radiation pattern at a point of frequency, freq.domain near-to-far-field transformation technique is more useful, easier and more memory-efficient than time-domain technique. Using real-time DFT technique, equivalent surface current on the virtual surface surrounding antenna will be calculated. I reccom
Click on Start, and the right click on my computer, and choose properties from there. Choose the advance tab and there click on the performance settings and choose advance from there you will virtual memory, you can change it int any value you want. Best regards, /Farhad
How I design it ? plz help me.
Can you explain a little more what you are trying to do? How much data you have? Does MATLAB need to access it randomly or sequentially? The operating system is suppose to provide virtual memory to the application (by using the hard drive), so it behaves as if you have more RAM installed.
swap is nothing but virtual memory alloted by linux . it act simillar to physical memory/RAM in computer. current process was run from RAM only .if u r ram become full all data will store in swap. processing data run from swap itself it wont disturb RAM always. so we get fast procesing time. and reduce RAM access. it is simillar to (...)
Check your server virtual memory, it must be very low
On which machine you run the tools? I think the key is where you memory and virtual memory located. they are often used for swap data, and most limited the speed.