alienware r4

Title: n matrix multiplication, to find the least number of multiply operations and how to combineSuppose that matrix A is r1*r2 and matrix B is R2*R3, so m=a*b=r1*r2*r3. When multiple matrices are multiplied, the number of operations is different when the matrix is combined in different ways.Example: M=M1 * M2 * M3 * M4[5*20] [20*50] [50*1] [1*100]((m1*m2) *m3) *m4=5000+250+500=5750and M1* (m2* (M3*M4)) =5000+100000+10000=115000If you follow (m1* (M2*M3) *m4) =1000+100+500=1600The above examp

, figure 1 sets a retention station for each command, while some processors use a retention station to control all pipelines. Reverse dependency Unordered execution can complete other tasks within the waiting time to improve efficiency, but it may also cause problems. For example, the following program. LD R1, [a]; then reads the memory variable A into the register r1 (loaded) Add R2, R1, R5; then R1 and R5 are added and saved to R2. Sub R1, R5,

0x04Und_stack_size equ 0x04Svc_stack_size equ 0x04User_stack_size equ 0x100 ;----------------------------------------------------------------------------9200 clock changes after startupBecause the system enters the slow clock Status After resetting, the host clock source is provided by the slow clock. However, because the built-in boot program may have started, you need to reset the slow clock to the host clock source at startup. However, the host clock register requires that the written value

always points to the last counter that gets the read-lock thread.Next, let the W1 thread request a write lock. The write lock and the read lock are mutually exclusive, so the write lock cannot be applied successfully, so it enters the ' wait queue '.Because the wait queue is lazy-initialized, this is the time to generate the head node for the wait queue:Then the w1 corresponding node end is inserted into the ' Waiting queue ':Then the waitstatus of the current node's predecessor node is set to-

the call to Test_c_args the currentLR into the stack, call the end of the Test_c_args and then save the LR just saved in the stack back to the PC, so as to return to the main function.If the Test_c_args parameter is 8. This situation Test_asm_args how the parameters should be passed.Example 2:Test_asm_args.asm//--------------------------------------------------------------------------------IMPORT Test_c_args; Declare Test_c_args functionArea test_asm, CODE, READONLYEXPORT Test_asm_argsTest_asm_

code to the beginning of the probe function:int *ptest = NULL;*ptest = 0x1234;Re-compile the kernel, and it will error after startup and print out the following Oops information:Unable to handle kernel NULL pointer dereference in virtual Address 00000000PGD = c0004000[00000000] *pgd=00000000Internal error:oops:805 [#1]Modules Linked In:cpu:0Not tainted (2.6.22.6 #36)PC is at s3c2410fb_probe+0x18/0x560LR is at platform_drv_probe+0x20/0x24PC: [LR: [psr:a0000013Sp:c0481e64 ip:c0481ea0 fp:c0481e9cr

Osintexit function to activate the PENDSV interrupt when the interrupt exits, and the real task switch is implemented in the PENDSV interrupt routine. The 3rd is to call Os_sched when a task switch is required, which calls OSCTXSW, while OSCTXSW activates the PENDSV interrupt, and the PENDSV interrupt routine completes the real task switch. So all the task transitions are ultimately done by the PENDSV interrupt routine. The interrupt priority of the PENDSV must be the lowest of all interrupts

(6) Label: MUL2 function: Double-byte binary unsigned number squared(a+b) ^2=a*a+b*b+2*a*b(90+9) ^2=90*90+9*9+2*90*9=8100+1620+81=98019999--------891+ 891--------98019 9Entrance Condition: Square number in R2, R3Export information: results in R2, R3, R4, R5.Impact resources: PSW, A, B, R2~R5 stack requirements: 2 bytesMul2:mov a,r3; calculate R3 SquaredMOV B,aMUL AB; 9*9=81MOV R4,b; Staged part high,

element to add a click event, click to eject P innerHTML. The only difference is that there is more than one r.jsin the directory.Index.html made the changes, as follows 1234567891011121314151617 "utf-8"/> Note thatData-main changed to "built"and the previous article was "main". We will use R.js to merge the cache.js,event.js,selector.js,main.js in the JS directory and write to the R4 directory.OK, let's start merging compres

) # frame-relay lm-type cisco Router (config) # inter fa0/0 Router (config-if) # ip add Router (config-if) # ip address 192.168.1.1 255.255.255.0 Router (config-if) # no shu If the IOS version of the Cisco router is 11.2 or a later version, the router can automatically negotiate with the MNS as the type So it does not deserve Router (config) # router rip Router (config-router) # ver 2 Router (config-router) # no auto-summary Router (config-router) # network 172.16.134.0 Router (config-router) #

The LSA of OSPF has 11 classes, commonly used is 1 (router itself), 3 (network summary), 5 class (as external route);Class 7 LSA (7 classes of LSA is generated under a non-complete peripheral region)NSSA (Not-so-stubby area) is an LSA originating from the ASBR router in the NSSA region that advertises that it only floods within the NSSA region, and that the 5-class LSA difference is the range of the propagation (5 classes are flooded throughout the as region and 7 classes can only flood in the N

; 'Z' set if from System ModeBNE % F50; reentering kernel, save state on StackField Protection Branch; Whether the mode is user and system state before an exception occurs. FIQ/IRQ/svc/abort/UNDEFLDR r0, [R3, # pcurthd]; (R0) = PTR to current thread; R0 = kdata + pcurthdAdd r0, R0, # tcxr4; (R0) = PTR to R4 save; R0 = kdata + pcurthd + tcxr4; 0x44bytes after thread_context_offset is used to back up the register contentStmia r0, {

)0x10101010L; /* R10 */ *(--stk) = (INT32U)0x09090909L; /* R9 */ *(--stk) = (INT32U)0x08080808L; /* R8 */ *(--stk) = (INT32U)0x07070707L; /* R7 */ *(--stk) = (INT32U)0x06060606L; /* R6

ip:c3871f54 FP:C3871F50r10:4021765c r9:c3870000 r8:00000000r7:00000004 r6:c3871f78 r5:40016000 r4:c38e5160r3:c3871f78 r2:00000004 r1:40016000 r0:00000000FLAGS:NZCV IRQs on Fiqs on Mode svc_32 Segment usercontrol:c000717f table:33894000 dac:00000015Process sh (pid:745, stack limit = 0xc3870258)Stack: (0xc3871f44 to 0xc3872000)1f40:c3871f74 c3871f54 c0088eb8 bf00608c 00000004 c38e51801f60:c3871f78 00000000 c3871fa4 c3871f78 c0088ffc C0088e04 00000000 0

In embedded software programming, the function call is often used, before learning how to embed the assembly in C language, there is a parameter call before the C language is used to pass the first parameter with register R0, R1 pass to the second one. Pass the fourth argument to R3. But in fact, sometimes it can pass a lot of parameters, more than 8, or there are floating-point numbers in the parameters, the parameters will be more than 4 registers, for the excess part does not use

AuthorPengdonglin[Email protected]PlatformTQ2440Qemu+vexpress-ca9Linux-4.10.17BodyContinue analyzing head. S1Ldr R13, =__mmap_switched @ address to jump2 @ MMU has been enabled3Badr LR, 1f @return(PIC) address4mov r8, r4 @SetTTBR1 to Swapper_pg_dir5 Ldr R12, [R10, #PROCINFO_INITFUNC]6 add R12, R12, R107 ret R128 1: b __enable_mmuThe 1th line assigns the virtual address of the __mmp_switched label to R13, which is used when the back is returned from __

Solve BGP routing Black Hole 650) this. width = 650; "onclick = 'window. open (" http://blog.51cto.com/viewpic.php? Refimg = "+ this. src) 'border =" 0 "alt =" "src =" http://www.bkjia.com/uploads/allimg/131227/0U032E13-0.jpg "/> The ospf protocol is run between R2, R3, and R4, and an IBGP neighbor is established between R2, R3, and R4 using a loopback port. Router bgp 100 no synchronization bgp router-id

available physical network adapter to bridge to vmnet0 option of the Enable Automatic Bridge of the automatic bridging is selected. 4. Virtual Machine customization OptimizationTo run multiple virtual machines on one machine, it is best to optimize each virtual machine. Based on experience, memory usage is much higher than CPU usage on virtual machines with few tasks. Therefore, we have installed the five virtual machines, namely R1, R2, R3, R4, and

Description These format definitions are used to match the pixel format of the traditional PC's image frame buffer. Each pixel occupies 8, 16, 24, or 32 bits. This is the packed-pixel format, which means that each pixel is in the memory. When one of these formats is used, the driver should report the color space to v4l2_colorspace_srgb. Table2-1. Packed RGB image formats IdentifierCode Byte 07654/3210 Byte 1 Byte 2 Byte 3 V4l2_pix_fmt_rgb332'Rgb1' B1 B0 G2

(config) # int lo0R3 (config-If) # IP add 3.3.3.3 255.255.255.0R3 (config) # int S1/2R3 (config-If) # encapsulation frame-relayR3 (config-If) # No frame-relay inverse-ARPR3 (config-If) # No ARP frame-relayR3 (config-If) # IP add 123.1.1.3 255.255.255.0R3 (config-If) # frame-relay map IP 123.1.1.2 302 Broadcast Certificate ----------------------------------------------------------------------------------------------------------------------------------------