search for: pde

Hi Everyone, Recently I got puzzled by the function read.table, even though I have used it for a long time. I have such a file (tmp.txt, 2 rows and 3 columns, with a space among columns): 1 2'-PDE 4 2 3'-PDE 5 if I do: a = read.table("tmp.txt", header = F, quote = "") a V1 V2 V3 1 1 2'-PDE 4 2 2 3'-PDE 5 Everything is fine. However, if I do: a = read.table("tmp.txt", header = F) a V1 V2 V3 1 2 3'-PDE 5 2 1 2'-PDE 4 3...

Dear all, Does any know how to solve PDE with R? The archive list refers to the use of ODE if PDE are parabolic. I am not a mathematician and this does not mean anything for me! help would be very appreciated. Many thanks -- ___________________________________________________ Christophe NGUYEN UMR 1220 INRA-ENITAB Transfert sol-plan...

Is there a package in R which implements numerically solves pde ? Thanks, Tolga

Hi,I am trying to port the Matlab code in the link below to R: http://en.literateprograms.org/Asian_Option_Pricing_(MATLAB)This code solves a PDE with initial and boundary conditions.Could anyone point me in the right direction in terms of what packages I should use ?Best Regards,Tom [[alternative HTML version deleted]]

...account_seq_start and account_seq_stop to outside the spin-lock, these messages go away. I don't see that the lock does anything to protect the malloc/free. My changed version of these functions are: static void *account_seq_start(struct seq_file *s, loff_t *pos) { struct proc_dir_entry *pde = s->private; struct t_ipt_account_table *table = pde->data; unsigned int *bucket; bucket = kmalloc(sizeof(unsigned int), GFP_KERNEL); if (!bucket) return ERR_PTR(-ENOMEM); spin_lock_bh(&table->ip_list_lock); if (*pos >= table->count) return NUL...

...be made always true: > > > > - Those two functions (map_sg and map_sg_table) never deal with the > > "big" case. > > > > - An object is always mapped at a card address that is a multiple > > of PAGE_SIZE (ie, invividual PAGE_SIZE pages don't cross pde boundaries > > when mapped) > I think these two restrictions are reasonable to enforce, and we should do so. > > > > > Then we can probably simplify the code significantly *and* go back to > > handling PAGE_SIZE pages in the vmm->map_sg() instead of breaking them...

...though the cross-validation would be in the space of the data. The modification I need to make is as follows: 1. evaluate each spatial basis function at every computational point in my mesh (dense, but not part of the GAM) 2. use the bases members as individual initial conditions and integrate the PDE. 3. evaluate the salinity results at the (sparse) time and locations where I have observations. 4. construct a replacement model matrix X that reflects the influence at (x,t) of each spatial basis member. Summing these will works due to the linearity of the PDE. 5. The curvature penalty would remai...

...;> > >> > - Those two functions (map_sg and map_sg_table) never deal with the >> > "big" case. >> > >> > - An object is always mapped at a card address that is a multiple >> > of PAGE_SIZE (ie, invividual PAGE_SIZE pages don't cross pde boundaries >> > when mapped) > >> I think these two restrictions are reasonable to enforce, and we should do so. >> >> > >> > Then we can probably simplify the code significantly *and* go back to >> > handling PAGE_SIZE pages in the vmm->map_sg(...

...mm->spg_shift; > > u32 offset = vma->node->offset + (delta >> 12); > > - u32 bits = vma->node->type - 12; > > - u32 num = length >> vma->node->type; > > + u32 bits = shift - 12; > > + u32 num = length >> shift; > > u32 pde = (offset >> vmm->pgt_bits) - vm->fpde; > > u32 pte = (offset & ((1 << vmm->pgt_bits) - 1)) >> bits; > > u32 max = 1 << (vmm->pgt_bits - bits); > > @@ -98,7 +99,7 @@ nouveau_vm_map_sg_table(struct nouveau_vma *vma, u64 delta, u64 leng...

...an we make that happen easily ? For example, if my system page size is 64k, can we guarantee that it will always be mapped in the card at a virtual address that is 64k aligned ? If that is the case, then we *know* that a given page in the page list passed to nouveau_vm_map_sg() will never cross a pde boundary (will always be fully contained in the bottom level of the page table). That allows to simplify the code a bit, and maybe to write a unified function that can still pass down page lists to the vmmr.... On the other hand, if we have to handle misalignment, then we may as well stick to 1 PT...

...bool has_iommu_bp; Whether a chunk of memory is mapped through the IOMMU can be tested by checking if the IOMMU bit is set in the address recorded in the PTE. So has_iommu_bp looks redundant here. > }; > > struct nvkm_vm { > @@ -37,6 +39,13 @@ struct nvkm_vm { > u32 lpde; > }; > > +struct nvkm_vm_bp_list { > + struct list_head head; > + u32 pde; > + u32 pte; > + void *priv; > +}; > + Tracking the PDE and PTE of each memory chunk can probably be avoided if you change your unmapping strategy. Currently you are goin...

i am trying to solve a partial differential equation analytically(PDE) in R . i have found some functions that do the stuff numerically. But that will not meet my purpose. is there any function to solve PDE analytically. please help. -- View this message in context: http://r.789695.n4.nabble.com/analytical-solution-of-partial-differential-equation-tp4291618p42916...

...rimental configuration." [-Wcpp] #warning "No CONFIG_BKL is an experimental configuration." ^ /usr/src/dahdi-linux-2.6.2/drivers/dahdi/dahdi-base.c: In function ?dahdi_proc_open?: /usr/src/dahdi-linux-2.6.2/drivers/dahdi/dahdi-base.c:902:2: error: implicit declaration of function ?PDE? [-Werror=implicit-function-declaration] return single_open(file, dahdi_seq_show, PDE(inode)->data); ^ /usr/src/dahdi-linux-2.6.2/drivers/dahdi/dahdi-base.c:902:53: error: invalid type argument of ?->? (have ?int?) return single_open(file, dahdi_seq_show, PDE(inode)->data);...

...e.c.orig Only in /usr/src/sys/i386/i386: db_interface.c.rej diff -u -r /usr/src/sys.old/i386/i386/genassym.c /usr/src/sys/i386/i386/genassym.c --- /usr/src/sys.old/i386/i386/genassym.c Thu Aug 21 18:35:33 2003 +++ /usr/src/sys/i386/i386/genassym.c Fri Aug 22 02:15:02 2003 @@ -96,10 +96,6 @@ ASSYM(NPDEPG, NPDEPG); ASSYM(PDESIZE, PDESIZE); ASSYM(PTESIZE, PTESIZE); -ASSYM(PDESHIFT, PDESHIFT); -ASSYM(PTESHIFT, PTESHIFT); -ASSYM(NPGPTD, NPGPTD); -ASSYM(NPDEPTD, NPDEPTD); ASSYM(PAGE_SHIFT, PAGE_SHIFT); ASSYM(PAGE_MASK, PAGE_MASK); ASSYM(PDRSHIFT, PDRSHIFT); Only in /usr/src/sys/i386/i386: genassy...

...do_IRQ: stack overflow: 464 Jan 14 03:06:21 fs2 kernel: [<c04073bd>] do_IRQ+0x5c/0xae Jan 14 03:06:21 fs2 kernel: BUG: unable to handle kernel paging request at virtual address fc7ff0aa Jan 14 03:06:21 fs2 kernel: printing eip: Jan 14 03:06:21 fs2 kernel: c0606da4 Jan 14 03:06:21 fs2 kernel: *pde = 00000000 Jan 14 03:06:21 fs2 kernel: BUG: unable to handle kernel paging request at virtual address fc7ff226 Jan 14 03:06:21 fs2 kernel: printing eip: Jan 14 03:06:21 fs2 kernel: c060704e Jan 14 03:06:21 fs2 kernel: *pde = 00000000 ----clip for repeating info------ Jan 14 03:06:21 fs2 kernel:...

Hi, Generally the the imported buffers which has memory type TTM_PL_TT are mapped as small pages probably due to lack of big page allocation. But the platform device which also use memory type TTM_PL_TT, like GK20A, can *allocate* big page though the IOMMU hardware inside the SoC. This is a try to map the imported buffers as big pages in GMMU by the platform IOMMU. With some preparation work to

...u32 offset = vma->node->offset + (delta >> 12); >> > - u32 bits = vma->node->type - 12; >> > - u32 num = length >> vma->node->type; >> > + u32 bits = shift - 12; >> > + u32 num = length >> shift; >> > u32 pde = (offset >> vmm->pgt_bits) - vm->fpde; >> > u32 pte = (offset & ((1 << vmm->pgt_bits) - 1)) >> bits; >> > u32 max = 1 << (vmm->pgt_bits - bits); >> > @@ -98,7 +99,7 @@ nouveau_vm_map_sg_table(struct nouveau_vma *vma, u64...

...gt; > For example, if my system page size is 64k, can we guarantee that it > will always be mapped in the card at a virtual address that is 64k > aligned ? > > If that is the case, then we *know* that a given page in the page list > passed to nouveau_vm_map_sg() will never cross a pde boundary (will > always be fully contained in the bottom level of the page table). That > allows to simplify the code a bit, and maybe to write a unified function > that can still pass down page lists to the vmmr.... > > On the other hand, if we have to handle misalignment, then we m...

...21-0945 java.version=1.6.0_01 java.vendor=Sun Microsystems Inc. BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=pt_BR Command-line arguments: -os linux -ws gtk -arch x86_64 !ENTRY org.eclipse.update.configurator 2007-06-25 09:44:01.535 !MESSAGE Could not install bundle plugins/org.eclipse.pde.build/ Bundle "org.e clipse.pde.build" version "3.2.1.r321_v20060823" has already been installed from : update at plugins/org.eclipse.pde.build_3.2.1.r321_v20060823/ !ENTRY org.eclipse.core.runtime 2007-06-25 09:44:02.208 !MESSAGE Product org.eclipse.sdk.ide could not be foun...

I haven't used r in quite a while but would like to get back into it. I have a problem that I would like to solve with r. I have some multinomial data that looks to follow an asymmetric sigmoidal growth pattern. Solving a multinomial gompertz partial differential equation in r is what I’m after. Would anyone be able to provide me the code and packages to do something like this? Regards,